I need a bit of help!

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 ?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Jim had 15 minutes to do 5 laps around his school what would his time be