Answer:
The length of the rectangular pen is 40ft. The width of the rectangular pen is 20ft
The answer for this question is-4
Step-by-step explanation:
1. 10xy · 4xy^3 =
2. 10xy · -7xy =
3. 10xy · 9y^2 =
Final step: add up all of those values together to make an equation!
Final Answer: