Answer:
Step-by-step explanation:
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
3,968,253.968253968
56.4059 - 4.837 = 56 - 5 = 51
Answer: A