Solve the problem.To remodel a bathroom, a contractor charges $30 per hour plus material costs, which amount to $4,350. Therefore, the total cost to remodel the bathroom is given by 
where x is the number of hours the contractor works. Find a formula for 
What does 
compute?
A. f -1(x) = 
- 4,350; This computes the number of hours worked if the total cost is x dollars.
B. f -1(x) = 
- 4,350; This computes the total cost if the contractor works x hours.
C. f -1(x) = 
- 145; This computes the total cost if the contractor works x hours.
D. f -1(x) = 
- 145; This computes the number of hours worked if the total cost is x dollars.
Answer: D
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Write as a decimal.- 
A. -0.32
B. -0.33
C. -0.3
D. -0.325
Find the expected value of the random variable in the experiment.A bag contains six marbles, of which four are red and two are blue. Suppose two marbles are chosen at random and X represents the number of red marbles in the sample.
A. 1.4 B. 0.933 C. 1.33 D. 1
Solve.A stone is a unit in the British customary system. Paul weighs 77.3 kilograms. Convert this weight to stones and pounds. Round to the nearest pound. Use this conversion: 
A. 5 stone 2 lb B. 17 stone 0 lb C. 12 stone 2 lb D. 2 stone 1 lb
Find an equation in slope-intercept form (where possible) for the line.Through (-2, 8), perpendicular to -7x - 9y = 86
A. y = 
x + 
B. y = - 
x + 
C. y = 
x + 
D. y = 
x + 