mr. martin is giving a math test next period. the test, which is worth 100 points, has 29 problems. each problem is worth either 5 points or 2 points. write a system of equations that can be used to find how many problems of each point value are on the test. let x be the number of questions worth 5 points and let y be the number of questions worth 2 points. x y = 29, 5x 2y = 100 x y = 100, 5x 2y = 29 5x y = 29, 2y x = 100 2x y = 100, 5y x = 29