Jeff can paint his room in 16 hours, and together he and his sister Sarah can paint the same room in 4 hours. How long would it take his sister to paint the room herself? X
hours

How do the graphs of y = 1/x and y=5/x+6 compare?

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.