Simplify the expression X^-1

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Find the roots of the equation below. x^2 - 6 + 9 = 0

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18