Solve the problem.From a distance of x feet to a 190-meter-high radio tower, the angle of elevation is ? degrees. Then 
Use a reciprocal identity to rewrite this formula.
A. 
B. 190 cot ?
C. 
D. 190 sec ?
Answer: B
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Solve the problem.The table shows the number of new cases (in thousands) of a certain disease diagnosed in a country in various years. 
Let f(t) be the number of new cases (in thousands) of the disease diagnosed at t years since 2010. Use a quadratic model to predict when the number of new cases of the disease diagnosed will be 53,700. (First find a quadratic equation for f in vertex form by using the data for the years 2013 and 2017).
A. 2021 B. 2019 C. 2020 D. 2022
Match the system of inequalities with the appropriate graph.2x + y ? 4 y - 1 ? 0
A. 
B. 
C. 
D. 
Solve.A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue when one marble is drawn from the bag?
A. 
B. 8
C. 
D. 
Solve.
= 
A. - 46
B. - 10
C. 14
D. - 