Solve the problem.A projectile is fired from a cliff 100 feet above the water at an inclination of 45° to the horizontal, with a muzzle velocity of 170 feet per second. The height h of the projectile above the water is given by 
where x is the horizontal distance of the projectile from the base of the cliff. How far from the base of the cliff is the height of the projectile a maximum?
A. 225.78 ft
B. 777.34 ft
C. 451.56 ft
D. 325.78 ft
Answer: C
Mathematics
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Use the Comparison Test to determine whether the improper integral converges or diverges.
A. converges B. diverges
Mathematics
Use differentiation to determine whether the integral formula is correct.
dx =
x2(5x + 1)4 + C
A. Yes B. No
Mathematics
Add or subtract and write the resulting polynomial in descending order of degree.
+ 
A. 3x3 + 
x2 + x - 
B. 3x3 + 
x2 + x - 
C. 3x3 - 
x2 + x - 
D. 2x3 + 
x2 + x - 
Mathematics
Solve the problem.In Country X, the average hourly wage in dollars from 1945 to 1995 can be modeled by f(x) = 
Use f to estimate the average hourly wages in 1950, 1970, and 1990.
A. $3.42, $0.34, $6.75 B. $0.73, $3.03, $6.75 C. $0.73, $2.27, $6.75
Mathematics