Simplify the rational expression. (Assume the denominator is nonzero.)
A. x - 2
B. -(x + 2)
C. x + 2
D. 
Answer: A
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Factor.500x3 + 4y3
A. 4(5x + y)(25x2 - 5xy + y2) B. (5x - 4y)(100x2 + 5y + y2) C. 4(5x - y)(25x2 + 5xy + y2) D. 4(5x - y)(25x2 + y2)
Solve the problem.Suppose A0dollars is deposited in a savings account paying 6.5% interest compounded continuously. After x years the account will contain 
dollars. If $590 is initially deposited in this account, how much would be in the account after 11 years? Round to the nearest cent.
A. $2.04 B. $2372.74 C. $629.62 D. $1206.07
Solve the problem, rounding the answer as appropriate. Assume that "pure dominant" describes one who has two dominant genes for a given trait; "pure recessive" describes one who has two recessive genes for a given trait; and "hybrid" describes one who has one of each.In a population, 60% of females are pure dominant, 30% are hybrid, and 10% are pure recessive. If a pure recessive male mates with a random female and their first offspring has the dominant trait, what is the probability that the female is pure dominant?
A. 0.60 B. 0.40 C. 0.67 D. 0.75
Solve the problem.A speedboat moves at a rate of 27 km/hr in still water. How long will it take someone to ride the boat 93 km downstream if the river's current moves at a rate of 4 km/hr?
A. 0.3 hr B. 4 hr C. 3 hr D. 2883 hr