Ken can paint a room in 5 hours, and barbie can paint it in 4 hours. how long will it take if they work together?

Which expressions are equivalent to -6 + 3m

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4