Solve the problem.An object is thrown upward with an initial velocity of 11 ft per second. Its height is given by the function 
at time t seconds. After how many seconds does it reach its greatest height?
A. 4.5 seconds
B. 3.5 seconds
C. 6 seconds
D. 3 seconds
Answer: D
Mathematics
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Determine whether the given number is approximate or exact.Jennifer has 32 teeth.
A. Approximate B. Exact
Mathematics
Solve the problem.In one area, the lowest angle of elevation of the sun in winter is 24° 8'. A fence is to be built 
away from a plant in the direction of the sun. (See drawing) Find the maximum height, x , for the fence so that the plant will get full sun. Round your answer to the tenths place when necessary.
A. 6.5 ft B. 4.3 ft C. 5 ft D. 5.3 ft
Mathematics
Simplify the exponential expression.(23)4
A. 4096 B. 24 C. 32 D. 128
Mathematics
Solve the system of equations by elimination.
A. x = -4, y = 12; (-4, 12) B. x = -12, y = 3; (-12, 3) C. x = -12, y = 7; (-12, 7) D. x = 12, y = -4; (12, -4)
Mathematics