The sum of two numbers is 40 and the difference of the same two numbers is 3. find the numbers.

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.