While installing a sprinkler system, ethel wants to cut a 20-foot length of plastic tubing into two pieces. the longer piece is to be 2 feet longer than twice the shorter piece. find the length of each piece.

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2