Solve the problem.A rock falls from a tower that is 117.6 m high. As it is falling, its height is given by the formula 
. How long (to the nearest tenth of a second) will it take for the rock to hit the ground (h=0)?
A. 2822.4 sec
B. 10.6 sec
C. 10.8 sec
D. 4.9 sec
Answer: D
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Find the values of x for which the geometric series converges.
A. diverges for all x
B. 
C. 
D. -? < x < ?
Find the standard form of the equation of a circle that satisfies the given conditions.Center (5, 8); radius 
A. (x + 5)2 + (y + 8)2 = 10 B. (x + 8)2 + (y + 5)2 = 100 C. (x - 5)2 + (y - 8)2 = 10 D. (x - 8)2 + (y - 5)2 = 100
The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 3, x = 8
A. r = 
B. r = 
C. r = 
D. r = 
Solve the problem.The table lists the amount of emissions of a certain pollutant in millions of tons.
If the amount of emissions is modeled by a function of the form 
where x is the year, estimate the year in which the amount of emissions will be 
tons.
A. 2085 B. 2030 C. 2100 D. 2060