2/5 is the answer unless your multiplying
Draw a vertical line at the number 4 on your x axis positive side which is x=4
Then anything on the left of this line you just created at x=4 will be less than 4. But since your inequality is x less than/equal to 4 it includes 4 as well.
64 dollars. 55.25 divided by .87=63.5, round to nearest dollar and you get 64 dollars