Joseph invested $6,700

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.

What is r i 4.5+10r=-6.5 with work pls

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab