1. A student earns $12 each time he mows his neighbor’s lawn. He earned a total of $108 mowing the lawn last summer. Which of the following equations could be used to find w, the number of times the student mowed his neighbor’s lawn last summer?
A) 108w=12; w = 9
B) 12w=108; w = 9
C) w+12=108; w = 96
D) 108+w=12; w = 96