Solve for p.
i = prt
p = i-rt
p = i/(rt)
p = (rt)/i

Answer these questions showing your work plz

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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 ?