Elena and Lin are trying to solve 1/2x+3=7/2x+5. Describe the change they each make to each side of the equation. Elena’s first step is to write 3=7/2x−1/2x+5.
Lin’s first step is to write x+6=7x+10.

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 ?

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

How can you find the mean absolute deviation (mad) for this set of data?