16b^12-3(-8b^12)=16b^12-(-24b^12)=40b^12
Answer: It would be 30.5 i hope this helps.
-3 and 5 are probably the answers to number 9
number 10 would be -1
dk number 11
is there more to this problem?
Answer:
marla is 180m from the info center and she walked 240m from the parking lot to the lake