Solve the problem. Round answer to the nearest tenth, if necessary.A toy rocket is shot vertically upward from the ground. Its distance in feet from the ground in t seconds is given by 
. At what times will the ball be 
from the ground?
A. 8.7 sec
B. 4.3 sec
C. 2.2 and 6.5 sec
D. 135.1 and 142.9 sec
Answer: C
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Find f (c) by evaluating directly and by using synthetic division and the remainder theorem.f (x) = x 2 + 2x + 4 and c = 9
A. 95 B. 9 C. 107 D. 99 E. 103
Factor the sum or difference of two cubes.x3 - 125
A. (x - 5)(x2 + 25) B. (x + 5)(x2 - 5x + 25) C. (x - 5)(x2 + 5x + 25) D. (x + 125)(x + 1)(x - 1)
Solve the problem.In Smithville, there were 225 teachers in 1990 and 321 teachers in 2000. Find the percent of increase in the number of teachers in Smithville during this time period. Round to the nearest tenth of a percent.
A. 42.7% B. 46.9% C. 29.9% D. 51.2%
Fill in the blank with the correct inequality symbol, using the rules for producing equivalent inequalities.If 
? 9, then x 
36.
A. > B. < C. ? D. ?