# Algebra 2 and Trigonometry - Fall 2009

High School Math based on the topics required for the Regents Exam conducted by NYSED.

### Fall 2009 Regents Exam

Q #1 - 2009 Algebra2 /Trigonometry Fall Sampler
Complex number

1. The expression (3 − 7i)2 is equivalent to

Q #2 - 2009 Algebra2 /Trigonometry Fall Sampler
Composition of functions
2. If f(x) = 1/2 x − 3 and g(x) = 2x + 5, what is the value of (g ⚬ f)(4)?

Q #3 - 2009 Algebra2 /Trigonometry Fall Sampler
Trigonometry - Tan
3. What are the values of θ in the interval 0° ≤ θ < 360° that satisfy the equation tan θ − √3 = 0?

Q #4 - 2009 Algebra2 /Trigonometry Fall Sampler 4. A survey completed at a large university asked 2,000 students to estimate the average number of hours they spend studying each week. Every tenth student entering the library was surveyed. The data showed that the mean number of hours that students spend studying was 15.7 per week. Which characteristic of the survey could create a bias in the results?
(1) the size of the sample
(2) the size of the population
(3) the method of analyzing the data
(4) the method of choosing the students who were surveyed

The answer is (4) the method of choosing the students who were surveyed

The method of choosing is bias because only students who use the library were surveyed, There could be many more students in the university that do not use the library at all.

More Questions

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