Solve.The function h(t) = -16t2 + 80t - 96 gives the height h, in feet, of a flare fired from the bottom of a gorge 96 feet deep with an initial velocity of 80 ft/sec. The flare fired is visible only when it is above the rim (h = 0). During what interval can the flare be seen?
A. (0, 2)
B. (6, 7)
C. (4, 5)
D. (2, 3)
Answer: D
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Solve.An object's weight is a downward force due to gravity and is calculated by multiplying the object's mass by the acceleration due to gravity, which is constant 
American mass units are slugs (s) and force units are pounds (lb.). Find the weight of a person with a mass of 3.8 slugs on Earth if the acceleration constant on Earth is -32.2 ft/sec2.
A. -0.12 lb. B. -28.4 lb. C. -122.36 lb. D. -1223.6 lb.
Solve.When Maria finished medical school she owed $42,000 in student loans. She repaid 
of the total amount within two years of graduating. How much did she repay within two years of graduating?
A. $33,600 B. $30,240 C. $3360 D. $36,960
Find the exact value of the sum.sin 75° - sin 15°
A. 
B. - 
C. 
D. 
Find the part.4000% of 397 books
A. 1588 books B. 1,588,000 books C. 15,880 books D. 158,800 books