Answer:
I don't know but I can help you understand it.
Step-by-step explanation:
First find the the answer to the problem and then try to compare all of them to each other and choose the one that makes the most sense.
Answer:
3x-8
Step-by-step explanation:
add all the like terms.
9x+-4x+-2x=3x
6+1+-15=-8
Answer:
800
Step-by-step explanation: 75 x 8
After 18 minutes there will be 486 gallons of water drained.
Answer:
60 gallons
Step-by-step explanation:
40+1/2*40=40+20=60