Start by multiplying the 9 out:
9(-6 + 8y) = -54 + 72y
Then, add the 7:
-54 + 72y + 7
Then simplify the whole thing:
-47 + 72y
Answer:
the ANWER IS B
Step-by-step explanation:
It B BECAUSE I AM SMART
To find the difference, subtract Thea's earnings from Hadley's earnings.

Thea earned $54 more than Hadley.
M+15=65 could this be the answer you are possibly looking for? if the m is Mai's savings "increased by 15" would simply be adding 15 and it would be equal to 65