Solve.x2 + 12x - 13 = 0
A. -1, 13
B. 0, -13
C. 
, - 
D. 1, -13
Answer: D
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Solve the problem.Under certain conditions, the cost per mile C of operating a car is a function of the speed v (in mi/h) of the car, given by C = av2 + bv + c. If C = 25.25 ¢/mi for v = 5 mi/h, C = 26 ¢/mi for v = 20 mi/h, and 
for v = 35 mi/h, find C as a function of v.
A. C = 0.2v2 + 26v + 0.01 B. C = 0.01v2 -0.2v + 26 C. C = 26v2 - 0.01v + 0.2 D. C = 0.01v2 + 26v + 0.2
Solve for the variable.
x - 
x = 3
A. x = 90 B. x = -45 C. x = 45 D. x = -90
Provide an appropriate response.In a raffle 1000 tickets are being sold at $1.00 each. The first prize is $100, and there are 3 second prizes fo $50 each. By how much does the price of a ticket exceed its expected value?
A. $1.00 B. $0.75 C. $1.75 D. $50
Rationalize the denominator. Assume that all radicands represent positive real numbers.
A. 8
B. 
C. 
D. 