Answer: He would be at 42.14 feet below surface. (hope it helps)
Step-by-step explanation: add 37.9 and 12.4 to get the number of feet he went down then subtract 8.16 to get what he's at.
Answer:
10%
Step-by-step explanation:
raises $50 from $500 500/50= 10=10%
(12x + 9y) + (-2y) - (4x - 3y)
= 12x + 9y - 2y - 4x + 3y
= 12x - 4x + 9y - 2y + 3y
= 8x + 10y
A) 8x + 10y