Solve the problem.Write as a mixed number: - 
A. -9
B. -8
C. -8
D. -7
Answer: C
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Solve the problem. Round your answer, if appropriate.A man 6 ft tall walks at a rate of 4 ft/sec away from a lamppost that is 16 ft high. At what rate is the length of his shadow changing when he is 50 ft away from the lamppost? (Do not round your answer)
A. 
ft/sec
B. 
ft/sec
C. 
ft/sec
D. 
ft/sec
Write the phrase as a mathematical expression. Use x as the variable.The quotient of 1 less than a number and 8 more than the number
A. (x - 1) + (x + 8)
B. 
C. 
D. 
x
Use the fundamental identities and appropriate algebraic operations to simplify the expression.
- tan x
A. tan x B. csc x C. tan2 x D. cot x
Solve the problem.Approximate the area under the graph of f(x) = ex + -2 from -1 to 4 by partitioning the interval into 4 subintervals of equal length and choosing t to be the left endpoint. Round to the nearest hundredth.
A. 27.22 B. 108.88 C. 68.88 D. 17.22