Solve the problem. Round to the nearest tenth, if necessary.If an object is propelled upward from a height of 144 feet at an initial velocity of 128 feet per second, then its height h after t seconds is given by the equation  After how many seconds does the object hit the ground?

A. 4.5
B. 11
C. 8.0
D. 9


Answer: D

Mathematics

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Use the bar graph to answer the question.The bar graph illustrates the numbers of certain grades earned in Mathematics 100. How many more C grades were earned than A grades?

A. 3 B. 2 C. 4 D. 5

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Estimate the sum or difference by first rounding to the nearest ten.84

A. 200 B. 180 C. 170 D. 177

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Divide and write in standard form.

A.  i
B.  i
C.  i
D.  i

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List the potential rational zeros of the polynomial function. Do not find the zeros.f(x) = 5x4 - x2 + 2

A. ± , ± , ± 1, ± 5
B. ± , ± , ± 1, ± 2
C. ± , ± , ± 1, ± 2, ± 5
D. ± , ± , ± 1, ± 2, ± 5

Mathematics