frank earns $150 a week plus a 3% commission selling computer supplies part-time. Last week his sales totaled $6,500. How much did frank earn last week.

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano

What is the perimeter of an equilateral triangle if each side is (x+3)?