Fill in the blank with one of the words or phrases listed below.
The solution(s) to the equation x + 5 = x + 5 is/are 
.
A. no solution
B. like terms
C. all real numbers
D. the same
Answer: C
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Express the sum or difference as a product of sines and/or cosines.cos(4?) + cos(2?)
A. 2 sin(3?) sin ? B. 2 cos(3?) cos ? C. 2 cos(3?) sin ? D. 2 cos(3?)
Solve the problem.The function f(t) = -0.14t2 + 0.51t + 30.3 models a certain country's population in millions, ages 65 and older, where t represents years after 2010. The function g(t) = 0.51t2 + 12.89t + 106 models the total yearly cost of the government's health insurance program in billions of dollars, where t represents years after 2010. What does the function 
represent? Find 
(5).
A. Cost per person in thousands of dollars. $0.20 thousand B. Cost per person in thousands of dollars. $12.76 thousand C. Cost per person in thousands of dollars. $6.24 thousand D. Cost per person in thousands of dollars. $0.16 thousand
Use the power rule and the power of a product or quotient rule to simplify the expression.
4
A. 
B. 
C. 
D. 
Tell whether the statement is true or false.Some rational numbers are integers.
A. True B. False