Question for math; 2m3n-4/p-6

Write as a product: ac^2–ad+c^3–cd–bc^2+bd

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

If a sprinkler waters 1 over 12 of a lawn in 1 over 2 hour, how much time will it take to water the entire lawn? (5 points) 10 hours 6 hours 1 over 6 hour 7 over 12 hour