Find the quadratic function whose graph contains the given points.(7, -13), (4, 5), (6, -3)
A. f(x) = 4x2 + 16x - 27
B. f(x) = 2x2 + 16x - 27
C. f(x) = -2x2 + 16x - 5
D. f(x) = -2x2 + 16x - 27
Answer: D
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This model is of the form f(x) = mx + b. Determine what m and b signify.The cost, in dollars, of a one-day car rental is given by 
where x is the number of miles driven.
A. $0.19 is the cost per day to rent the car and $28 is the cost per mile. B. $28 is the cost per day to rent the car and $0.19 is the cost per mile. C. $28 is the cost per day to rent the car and $19 is the extra cost for unlimited miles. D. $19 is the cost per day to rent the car and $0.28 is the cost per mile.
Solve the problem.Assume that the profit P made when t units are sold, t > 0, is given by P(t) = t2 - 28t + 180. For what values of t will there be a loss (that is, P < 0)?
A. t = 10 or t = 18 B. 10 < t < 18 C. t > 0 D. 0 < t < 10 or t > 18
Solve the problem.The time in hours it takes a satellite to complete an orbit around the earth varies directly as the radius of the orbit (from the center of the earth) and inversely as the orbital velocity. If a satellite completes an orbit 
above the earth in 
at a velocity of 
how long would it take a satellite to complete an orbit if it is at 
-4.0px;" /> above the earth at a velocity of 
(Use 
as the radius of the earth.)
A. 113.15 hr
B. 2.46 hr
C. 18.17 hr
D. 11.31 hr
Compute the product.
A. 
B. 
C. 
D. 