Solve each equation. 13. 5c 9 8-2c 16. x = 16 14. 5(2-g) = 0 17. 3x 5 22 15. 6(n-4)= 3n 18. x + 3 = 8 19. The first stage of a rocket burns for 28 seconds longer than the second stage. If the rocket's total burning time is 158 seconds, for how long does each stage burn? Solve each formula for the indicated variable. 21. v = s +sh; for h 20. The length of a rectangle is 3 cm greater than the width. The perimeter is 24 cm. What are the dimensions of the rectangle? 22. C = (F-32); for F.