C 75.00- 1/3 were cookies which is 150 cookies. 150x0.50=75.00
Answer:
D) $15.99 +$0.50n> $20
Step-by-step explanation:
In order to do this you have to substitute b with 9 and get 3a+9=54, now subtract 9 from both sides to leave a by itself and get 3a=45, now divide 3 in both sides to leave a by itself and get a=15
Hope this helps
