If you are given al the values except r, how do you rewrite the formula to solve for r

The answer will be R. thanks for my help

The answer is R. The R is going to be uppercase and a dot in front.

The answer is c because you turn 17.5% into a decimal which gives you .175 then you times that by $361.35 which gives you 63.23625 but then you round that which gives you 63.24. then you at 63.24 pulse 361.35 and you round it which gives you $425