Solve the problem. Round to the nearest tenth, if necessary.A rock falls from a tower that is 304 feet high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h = 0)?
A. 17.4 sec
B. 4.4 sec
C. 5776 sec
D. 17 sec
Answer: B
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Evaluate the integral.
dx
A. 5 ln 
+ C
B. ln 
+ C
C. 5 ln 
+ C
D. -ln 
+ C
Solve.A rocket is launched from the top of a cliff that is 112 feet high with an initial velocity of 112 feet per second. The height, h(t), of the rocket after t seconds is given by the equation 
How long after the rocket is launched will it strike the ground? Round to the nearest tenth of a second, if necessary.
A. 7.9 sec B. 8.7 sec C. 9.3 sec D. 8.3 sec
Arrange in descending powers of x.-11mx - 16mn + 10x4 - 14mx2
A. -16mn - 11mx - 14mx2 + 10x4 B. -11mx - 16mn + 10x4 - 14mx2 C. 10x4 - 14mx2 - 11mx - 16mn D. -11mx - 16mn - 14mx2 + 10x4
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 0.30x + 2.57 B. y = 0.32x + 2.57 C. y = 0.30x + 4.29 D. y = 0.32x + 4.29