Solve the problem. Round to the nearest tenth, if necessary.If an object is propelled upward from a height of 80 feet at an initial velocity of 64 feet per second, then its height h after t seconds is given by the equation 
After how many seconds does the object hit the ground?
A. 4.0 sec
B. 11 sec
C. 2.5 sec
D. 5 sec
Answer: D
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Sketch the graph and show all local extrema and inflection points.y = x
4
A. Local maximum: 
Local minimum: (10, 0)
Inflection points: 
, (10, 0)
B. Local maximum: 
Local minimum: (10, 0)
Inflection points: 
C. Local minimum: (10, 0)
No inflection points
D. Local maximum: 
Local minimum: (10, 0)
Inflection point: 
Solve.At 35 cents a foot, what is the cost to weatherstrip four windows measuring 51 inches by 68 inches and all sides except the bottom of the two doors that are 35 inches wide and 76 inches high?
Fill in the blank(s) with the appropriate word(s).
Solve the initial value problem for y as a function of x.(x2 + 16)
= 1, y(4) = 0
A. y = 
tan-1 
- 
B. y = 
tan-1 
C. y = 
- 1
D. y = 
sin-1 
- 
The graph of a certain function y = f(x) and the zero of that function is given. Using this graph, find a) the x-intercept of the graph of y = f(x) and b) the solution to the equation f(x) = 0.
A. a. -5 b. x = -5 B. a. -4 b. x = -4 C. a. 0 b. x = -4 D. a. -4 b. x = 0