Find the inverse of the function.f(x) = 5x3 + 7
A. f-1(x) = 
- 7
B. f-1(x) = 
C. Not a one-to-one function
D. f-1(x) = 
Answer: D
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Solve the problem.Suppose that a family has 5 children and that the probability of having a girl is 
. What is the probability of having no girls?
A. 0.03125 B. 0.15625 C. 0.06252 D. 0.31255
Interpret the linear equation.When a tow truck is called, the cost of the service is given by the linear function 
, where y is in dollars and x is the number of miles the car is towed. Find and interpret the slope and y-intercept of the linear equation.
A. m = 40; The number of miles the car is towed increases 40 miles for every dollar spent on the service. b = 3; The tow truck will tow the car 3 miles for no cost. B. m = 40; The cost of the service increases $40 every mile the car is towed. b = 3; The cost of the service is $3 if the car is not towed. C. m = 3; The cost of the service increases $3 every mile the car is towed. b = 40; The cost of the service is $40 if the car is not towed. D. m = 3; The number of miles the car is towed increases 3 miles for every dollar spent on the service. b = 40; The tow truck will tow the car 40 miles for no cost.
Solve.Mara can type 31 words per minute. How many words can she type in 
hour?
A. 41 words B. 1395 words C. 23 words D. 1046 words
Determine if the type of relation is linear, nonlinear, or none.
A. nonlinear B. linear C. none