Factor completely. If the polynomial cannot be factored, write "prime."4y3 - 108
A. 4(y - 3)(y2 + 9)
B. 4(y + 3)(y2 - 3y + 9)
C. 4(y - 3)(y2 + 3y + 9)
D. (4y - 3)(y2 + 3y + 36)
Answer: C
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Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.
A. 3x B. 3x8 C. 3 D. 3x4
A wet towel hung from a clothesline to dry loses moisture through evaporation at a rate proportional to its moisture content. After 1 hour, the towel has lost 40% of its original moisture content. How long will it take the towel to lose 80% of its original moisture content? ?
A. ?
B. ?
C. 
D. ?
E. 
Provide an appropriate response.If f is a logarithmic function, then what kind is function f-1?
What will be an ideal response?
?Suppose that the U. S. population for the years 1920, 1930, 1940, and 1950 is shown in the table below. Let x represent the number of decades since 1920. Estimate the population in 1970 by using a cubic polynomial that fits these data. ? Year 1920 1930 1940 1950 Population (in millions) 118 138 148 166??
A. ?448 million B. ?278 million C. ?236 million D. ?298 million E. ?210 million