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 112 ft/sec, and the gorge is 192 ft deep, during what interval can the flare be seen? (h = -16t2 + vot + ho.)
A. 3 < t < 4
B. 0 < t < 3
C. 6 < t < 7
D. 9 < t < 10
Answer: A
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Solve the problem.Tickets to a ballet cost $15 if bought in advance. If bought on the date of the ballet, they cost $22. For the ballet to make a profit, the total money collected from ticket sales must be at least $370. Write an inequality to represent the ballet making a profit, using x for the number of tickets bought in advance and y for the number of tickets bought on the date of the ballet. Do not solve the inequality.
A. 15x + 22y ? 370 B. 15x - 22y ? 370 C. 15x + 22y ? 370 D. 15x - 22y ? 370
Solve the problem.Suppose that a radio signal transmission pattern can be modeled by 
for 
where the units are miles. Assume that the positive x-axis points east, and determine the distances of transmission in the east, north, west, and south directions.
A. E: 48 miles, N: 96 miles, W: 48 miles, S: 0 miles B. E: 48 miles, N: 0 miles, W: 48 miles, S: 96 miles C. E: 48 miles, N: 48 miles, W: 48 miles, S: 0 miles D. E: 96 miles, N: 48 miles, W: 0 miles, S: 48 miles
Solve the equation.
= 
+ 5
A. {5} B. {0} C. ? D. {-5}
Evaluate.8x2 + 3x for x = 4
A. 116 B. 76 C. 140 D. 44