Use the horizontal line test to determine whether the function is one-to-one.
A. Yes
B. No
Answer: A
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Multiply or divide. Simplify, if possible. Assume all variables and radicands represent nonnegative real numbers.
(
+ x
)
A. 
+ x
B. x + 
C. 45x
D. 15 + x
Use a product-to-sum identity to rewrite the expression.sin(12s - 2) sin (6s - 5)
A. 0.5(cos(6s - 7) - cos(18s - 3)) B. 0.5(cos(6s + 3) - cos(18s - 7)) C. 0.5(cos(6s + 3) + cos(18s - 7)) D. 0.5(sin(6s + 3) - sin(18s - 7))
Answer the following statement(s) true (T) or false (F)
When students work within a dynamic geometry software environment, research indicates that they tend to over-rely on the software and as a result do not learn geometric definitions and language for themselves.
Solve the problem.There is a formula that gives a correspondence between women's shoe sizes in the United States and those in Italy. Find the US size for an Italian size of 42 by solving the equation 
where x represents the size in the United States.
A. 96 B. 9 C. 18 D. 4.5