Me. i’ve been stuck on this this for 2 weeks

D

Step-by-step explanation:

20b^4 + 23b^3 + 21b^2 Answer D

Step-by-step explanation:

4b^2 X 5b^2 = 20b^4

4b^2 X -3b = -12b^3

7b X 5b^2 = 35b^3

7b X -3b = -21b^2

35b^3 + (-12b^3) = 23b^3

20b^4 + 23b^3 -21b^2

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .