Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.15x2 - 65x - 50
A. 5(3x + 2)(x - 5)
B. (15x + 10)(x - 5)
C. prime
D. 5(3x - 2)(x + 5)
Answer: A
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Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 11 feet by 13 feet and the area of the rug is 15 square feet, how wide will the border be?
A. 6 ft B. 4 ft C. 5 ft D. 6.5 ft
Solve.Enrollment figures at a community college showed an increase from 45,567 credit hours in one year to 71,336 credit hours in the next. Round each number to the nearest thousand to estimate the increase.
A. 25,900 credit hours B. 26,000 credit hours C. 25,000 credit hours D. 25,800 credit hours
Graph the polar equation.r = 
A. 
B. 
C. 
D. 
Find a rectangular equation for the plane curve defined by the parametric equations.x = 5 cos t, y = -2 sin t; 0 ? t ? 2?
A. 4x2 - 25y2 = 100; x ? 5
B. 4x2 + 25y2 = 1; - 
? x ? 
C. 4x2 - 25y2 = 1; x ? 
D. 4x2 + 25y2 = 100; -5 ? x ? 5