To solve this you must simply add $2.10 + $4.45 together to get a sum of $6.55. Next, you must subtract the $6.55 from $13.50 to get a difference/final solution of $6.95. So, in conclusion, Luke made a profit of $6.95 from mowing the lawn.
For every enemy defeated 4 points are earned. Create a table showing the points earned for destroying up to 5 enemies,then plot the values on the coordinate plane.