How many steps are there in the problem-solving process

Solve |x| > -9 a) {x|x< -9 or x> 9} b) all reals c) no solution

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.