Solve the problem.A coin is tossed upward from a balcony 
high with an initial velocity of 
During what interval of time will the coin be at a height of at least 
(h = -16t2 + vot + ho.)
A. 3 ? t ? 4
B. 0 ? t ? 4
C. 0 ? t ? 1
D. 4 ? t ? 8
Answer: B
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Solve the problem.To find the distance AB across a river, a distance BC of 1369 m is laid off on one side of the river. It is found that B = 106.2° and 
Find AB. Round to the nearest meter.
A. 485 meters B. 482 meters C. 400 meters D. 403 meters
Solve the problem.Subtract (8a4 + 9a2) from the sum of (6a4 + 7a2) and 
A. -2a6 B. -2a12 C. 4a4 - 6a2 D. 4a8 - 6a4
Solve the problem.You own a hot dog cart in your city. Your monthly profit is determined from the expression 1.50x - 75, where x represents the number of hot dogs sold each month. The number 1.50 in the expression is the profit for each hot dog. The cost of leasing the hot dog cart is the number 75 in the expression. Your profit has been fluctuating between $1700 and $2200 per month. Determine approximately between what two values your hot dog sales have to be to realize this range of profit.
A. 1083 ? x ? 1416 B. 1183 ? x ? 1516 C. 1183 ? x ? 1517 D. 1083 ? x ? 1417
Simplify.
A. 4 
B. 5 
C. 7
D. 22