Solve the problem.A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of 128 feet per second and the gorge is 240 feet deep, during what interval can the flare be seen? Use the formula h(t) = -16t2 + v0t + h0.
A. The flare can be seen between 6 sec and 8 sec.
B. The flare can be seen between 3 sec and 5 sec.
C. The flare can be seen between 9 sec and 11 sec.
D. The flare can be seen up to, but not including, 3 sec.
Answer: B
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Solve the problem.A vertical right circular cylindrical tank measures 26 ft high and 14 ft in diameter. It is full of oil weighing 
How long will it take a (1/2)-horsepower (hp) motor (work output 
to pump the oil to the level of the top of the tank? Give your answer to the nearest minute.
A. 189 min B. 11,352 min C. 378 min D. 60 min
Solve the problem.Find the tangent line(s) at the pole for the curve 
A. ? = 
(y = 
x), ? = 
, (y = 
x), ? = 
(x = 0)
B. ? = 
(y = 
x), ? = 
(x = 0), ? = 
(y = - 
x)
C. ? = 0 (y = 0), ? = 
(x = 0), ? = 
(y = -
x)
D. ? = 0 (y = 0), ? = 
(y = 
x), ? = 
(y = -
x)
Solve the equation. If the equation is an identity or a contradiction, state this.4(5x - 1) - 2 = 17x + 3
A. x = 27 B. x = 3 C. x = 9 D. x = -3
Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(
- 
)2
A. xy - x
B. 2
- 2
C. xy + x
D. xy - 2x
+ x