What are 2 equivalent rations to 4:3

Kevin has just finished paying off his loan. he was assessed a service charge of $422. he paid off the principal and the interest by making weekly payments of $36.13 for four years. if the principal was $7,150, how much did kevin pay in finance charges, to the nearest dollar? a. $498 b. $365 c. $422 d. $787

Measures of the angle of r, 31 s (x+4) t (3x+9)

Solve the formula ax+ by = c for x.