Find the inverse of the function.f(x) = 
A. f-1(x) = (x - 7)3
B. f-1(x) = (x + 7)3
C. f-1(x) = x3 + 7
D. f-1(x) = 
- 7
Answer: C
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Solve the problem.The appliance store where the Scott family shops offers a 8% discount for paying cash. The Scott family received a discount of $34. What was their total bill before the discount?
A. $3 B. $4 C. $300 D. $425
Solve the problem.Find the foci and asymptotes of the following hyperbola:x2 - 
= 1
A. Foci: (
, 0), (-
, 0); Asymptotes: y = 
x, y = - 
x
B. Foci: (4, 0), (-4, 0); Asymptotes: y = 
x, y = - 
x
C. Foci: (0, 
), (0, -
); Asymptotes: y = 4x, y = -4x
D. Foci: (
, 0), (-
, 0); Asymptotes: y = 4x, y = -4x
Find the margin of error for the survey results described. During the questioning of 73 potential jury members, 36% said that they had already formed an opinion as to the guilt of the defendant.Give your answer as a percentage to one decimal place.
A. 23.4% B. 11.7% C. 1.4% D. 5.9%
Interpret the meaning of the slope and the y-intercept of the equation in terms of the conditions stated in the problem.The cost, in dollars, of cellular phone service with Econo-phone is given by 
where x is the number of minutes used in one month.
A. 17.25 signifies the total phone bill, and 0.51 signifies the number of minutes used. B. 17.25 signifies the cost per minute, and 0.51 signifies the monthly service charge. C. 0.51 signifies the hourly phone rent, and 17.25 signifies the cost of the hardware. D. 0.51 signifies the cost per minute, and 17.25 signifies the monthly service charge.