Answer the question about the period of the function.Find the period of the function f(?) = tan 
.
A. - 
B. 3?
C. 3
D. 
Answer: B
Mathematics
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Solve.Approximately 9 × 103 employees of a certain company average $30,000 each year in salary. What is the total amount earned by all the employees of this company per year? Write your answer in scientific notation.
A. $27 × 108 B. $27 × 109 C. $2.7 × 108 D. $2.7 × 109
Mathematics
Write an equation. Then, solve and check.The population of a city is 
It is estimated that this is about 
of the projected population fifty years later. What is the projected population of the city?
A. 6 = 
x; x = 3
million people
B. 6 = 
x; x = 10 million people
C. 6 = x - 
; x = 6
million people
D. x = 
? 6; x = 3
million people
Mathematics
Multiply. Write the answer in lowest terms. 
? 
A. 
B. 
C. - 
D. - 
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics