Help me answer this please

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

Me because i don't understand how to do it.: )

Charlene's parents deposit $500 in an account on the day she is born. the account earns a high interest rate of 9.2% compounded quarterly because charlene is not allowed to access the money until her 22nd birthday. how much money will charlene have on her 22nd birthday? a: $3,698.50 b: $5,921.31 c: $101,200 d: $ 824.58