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Results

Date: 19th Aug 2026Time Taken: 00:00:31

Mathematics

Answers Result

A student wrote the following notes for a school project: School gardens give students hands-on experience growing vegetables. Gardens can be used to teach science and nutrition lessons. Students involved in gardening often eat more fruits and vegetables. Many schools use garden produce in their cafeterias. The student wants to explain how school gardens can improve students’ eating habits. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Incorrect

A.School gardens offer a fun way to learn about science and nutrition.
B.Students who work in school gardens often choose to eat more fruits and vegetables.
C.School gardens supply fresh vegetables for school cafeterias.
D.Teachers can use the garden to give practical lessons on plant biology.

A laboratory culture contains 800 bacteria at noon. The population increases by 25% every 3 hours. Which equation models the number of bacteria P(t) present t hours after noon?

Correct

A.P(t) = 800(1.25)^{3t}
B.P(t) = 800(1.25)^{t/3}
C.P(t) = 800(0.75)^{t/3}
D.P(t) = 800(1.25)^{t}

The astronomy club meets every Thursday evening to observe the night sky and discuss recent discoveries. By the end of this semester, members ______ more than twenty different constellations using telescopes and star charts provided by the school. Which choice best completes the underlined portion of the sentence?

Incorrect

A.study
B.will have studied
C.are studying
D.have studied

Answers Result

Incorrect

A.School gardens offer a fun way to learn about science and nutrition.
B.Students who work in school gardens often choose to eat more fruits and vegetables.
C.School gardens supply fresh vegetables for school cafeterias.
D.Teachers can use the garden to give practical lessons on plant biology.

The correct answer clearly shows how school gardens can improve eating habits by stating that students involved in gardening often eat more fruits and vegetables. This directly connects the activity (gardening) to a positive change in what students choose to eat, which matches the goal of improving eating habits. The other choices do not focus on eating habits: learning about science or nutrition is helpful, but it does not show a change in what students eat; supplying vegetables to cafeterias is about food availability, not student choices; and using gardens for lessons is about teaching, not eating.

A laboratory culture contains 800 bacteria at noon. The population increases by 25% every 3 hours. Which equation models the number of bacteria P(t) present t hours after noon?

Correct

A.P(t) = 800(1.25)^{3t}
B.P(t) = 800(1.25)^{t/3}
C.P(t) = 800(0.75)^{t/3}
D.P(t) = 800(1.25)^{t}

Step-by-step reasoning 1. In exponential growth, the model is P(t) = P0(g)time ÷ growth period, where P0 is the initial amount and g is the growth factor for one full period. 2. Initial amount: P0 = 800 bacteria. 3. Growth details: • “Increases by 25%” → growth factor g = 1 + 0.25 = 1.25. • One growth period = 3 hours. 4. Substitute into the model: P(t) = 800(1.25)t/3 Quick check • t = 0: P(0) = 800(1.25)0 = 800 (matches noon count). • t = 3: P(3) = 800(1.25)1 = 1 000 (exactly 25% more than 800). Why the other equations are wrong 800(1.25)3t: Multiplies by 1.25 every ⅓ hour, giving nine growth periods in 3 hours—far too fast. 800(0.75)t/3: Uses 0.75, which models a 25% decrease. 800(1.25)t: Treats each hour as a full period; after 3 hours it multiplies by 1.253 ≈ 1.95 (almost doubling instead of 25% growth). Correct model: P(t) = 800(1.25)t/3

Incorrect

A.study
B.will have studied
C.are studying
D.have studied

The correct answer uses the future perfect tense, which shows an action that will be completed before a specific time in the future. “Will have studied” fits because it describes what members will finish by the end of the semester. Other choices are incorrect: “Study” is simple present, which does not show completion. “Are studying” is present continuous, which means the action is happening now, not finished. “Have studied” is present perfect, which means the action is already completed, not by a future time. Example: “By next week, I will have finished my project.”

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SAT questions test how you apply knowledge in real situations. After every answer, you are provided with a clear rationale so you can understand the reasoning, learn from mistakes, and recognize it when it appears again.

Question 1 of 3

The student wants to explain how school gardens can improve students’ eating habits. Which choice most effectively uses relevant information from the notes to accomplish this goal?

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Understand why,
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