Factor the trinomial completely. If the polynomial cannot be factored, write "prime."x2 + 4x - 45
A. (x + 9)(x - 5)
B. (x - 9)(x + 5)
C. prime
D. (x - 9)(x + 1)
Answer: A
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3 , where W is in pounds and h is the person's height in inches. Find the threshold weight for a person who is 6 ft 7 in. tall. Round your answer to the nearest pound.
A. 265 lb B. 161.6 lb C. 221.5 lb D. 296.3 lb
Answer the question.A cell has at least 3 and at most 47 nuclei. How many cells must a scientist view under his microscope to be certain that at least two cells have the same number of nuclei?
A. 45 cells B. 47 cells C. 44 cells D. 46 cells
Find the exact value of the expression. Do not use a calculator.- 
A. 0 B. 1 C. -1 D. undefined
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A. y + 5 B. y - 7 C. y + 7 D. y - 5