Complete the identity.tan (? - ?) = ?
A. tan ?
B. cot ?
C. -cot ?
D. -tan ?
Answer: D
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Find the surface area or volume.Use an integral table and a calculator to find to two decimal places the area of the surface generated by revolving the curve 
about the x-axis.
A. 75.90 B. 65.06 C. 37.95 D. 53.23
Write an equation for a function whose graph fits the given description.The graph of f(x) = x2 is shifted 2 units to the left. This graph is then vertically stretched by a factor of 5 and reflected across the x-axis. Finally, the graph is shifted 7 units downward.
A. y = -5(x - 2)2 + 7 B. y = -5(x - 2)2 - 7 C. y = -5(x + 2)2 - 7 D. y = -5(x + 7)2 - 2
Solve the problem.The function P(d) = 1 + 
gives the pressure, in atmospheres (atm), at a depth d feet in the sea. Find the pressure at 43 feet.
A. 
atm
B. 
atm
C. 
atm
D. 
atm
Perform the indicated operation and simplify.
+ 
A. 
B. 
C. 1
D. 