Use a product-to-sum identity to rewrite the expression.sin 
sin 
A. 0.5
B. 0.5
C. 0.5
D. 0.5
Answer: B
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Solve the problem.The accompanying figure shows the graph of y = x2 shifted to a new position. Write the equation for the new graph.
A. y = x2 - 2 B. y = (x + 2)2 C. y = x2 + 2 D. y = (x - 2)2
Translate the indicated expression.Linda passes a rest area on the highway. One-fourth of an hour later, Mark, traveling in the same direction, passes the same rest area. If t represents the amount of time it takes Mark to catch up to Linda, write an expression in terms of t that describes the amount of time Linda has traveled since passing the rest area.
A. 
B. 
- t
C. t - 
D. t + 
Determine whether (f(g(x)) = x and whether (g (f(x)) = x.f(x) = 
, g(x) = x
A. No, yes B. Yes, no C. Yes, yes D. No, no
The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using backward substitution.
Write the solution as an ordered triple, if possible.
A. No solution B. (60, -22, 5) C. (65, -24, 5) D. (60, -24, 5)