Please help check if this is correct?

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 is x3+3x2−16x−48 divided by x−1?

Can you divide 25 into 4 equal groups? explain why or why not.