Question

Ron is a car salesman. He earns a monthly wage of $1,000 plus a commission equal to 3% of the total price of the cars he sells. If p is the price of the cars Ron sells in a month, which equation represents Ron's total monthly income (r)?

Answer 1

1000 + .03p = r

You write "which equation represents" and yet you did not write any of the choices:
Could be .03p + 1000=r
or r= .03p +1000
or r= 1000 +.03p
They are all equivalent equations.