Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 2y4z5
Answer: D
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Determine the number of significant digits in the given approximate number.0.0403
A. 4 B. 2 C. 1 D. 3
Solve the problem. A reasonable quadratic model for the population of a certain city is found to be 
where B(t) is the population (in thousands) of the city in the year that is t years since 1990. A reasonable quadratic model for the number of residents of that city who were born outside the United States is 
where F(t) is the number (in thousands) of foreign-born residents of the city in the year that is t years since 1990. Let P(t) be percentage of residents of the city who were born outside the United States in the year that is t years since 1990. An
equation for P is P(t) = 
. Use P to predict when the city will have 13.4% foreign-born residents.
A. 2005
B. 2006
C. 2004
D. 2003
Determine if the function is concave up or concave down in the first quadrant.y = x3/2
A. Concave up B. Concave down
Factor the polynomial completely, given that the binomial is a factor.x - 1, x3 + 17x2 + 63x - 81
A. (x - 1)(x + 9)(x + 9) B. (x + 1)(x - 9)(x - 9) C. (x - 1)(x2 - 18x + 81) D. (x - 1)(x2 + 81)