Solve the problem.Tracy can wallpaper 3 rooms in a new house in 9 hours. Together with her trainee they can wallpaper the 3 rooms in 7 hours. How long would it take the trainee working by herself to do the job?
A. 9 hr
B. 33 hr
C. 42 hr
D. 66 hr
Answer: B
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Simplify: 72 ÷ 8 ? 3 - 72
A. -3 B. -46 C. -22 D. 13
Solve the problem.Employees of a publishing company received an increase in salary of 
plus a bonus of 
Let 
represent the new salary in terms of the previous salary x. Find and interpret 
A. $11,495; If an employee's old salary was $11,495, then his/her new salary was $13,000 after the increase and bonus. B. $22,800; If an employee's old salary was $22,800, then his/her new salary was $13,000 after the increase and bonus. C. $14,610; If an employee's old salary was $13,000, then his/her new salary was $14,610 after the increase and bonus. D. $13,700; If an employee's old salary was $13,000, then his/her new salary was $13,700 after the increase and bonus.
Provide an appropriate response.The only consecutive whole numbers that are both prime numbers are 
and 
.
A. 2 and 3 B. 1 and 2 C. 0 and 1 D. 6 and 7
Suppose that the function with the given graph is not f(x), but f'(x). Find the open intervals where f(x) is increasing or decreasing as indicated. Decreasing
A. (-?, -1), (-1, 2) B. (-1, 2) C. (-?, 2) D. (-?, 2)