Perform the specified translation.The graph on the left is the graph of the function defined by y = f(x). 
Sketch a graph of the function defined by the equation y = f(x + 2). Describe the type of shift that was performed on the original graph.
A. A vertical shift of the graph of y = f(x),
2 units downward.
B. A vertical shift of the graph of y = f(x),
2 units upward.
C. A horizontal shift of the graph of y = f(x),
2 units to the right.
D. A horizontal shift of the graph of y = f(x),
2 units to the left.
Answer: D
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Write the expression in terms of sines and/or cosines, and then simplify.
A. sin x
B. 
C. 
D. 
Solve the problem.Suppose a cost-benefit model is given by f(x) = 
, where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 30% to the nearest dollar.
A. $1170 B. $1671 C. $428 D. $3900
Determine if the function is even, odd, or neither.f(t) = cos2t
A. odd B. even C. neither D. both even and odd
Subtract the fractions. Write the answer in lowest terms.
A. 
B. 
C. 
D. 