Answer:
first question: Michelle worked for 7 hours
second question: Ken had $40 before buying the game
Explanation:
4x + 65 = 93
4x = 28, x = 7
Michelle worked for 7 hours
Ken 1/2x + 12 = 32
1/2x = 20
x = 20. 20*2 = $40, ken has $40 before buying the game.