Answer:
6r+7=13+7r
6r+7=7r+13
6r+7−7r=7r+13−7r
−r+7=13
−r+7−7=13−7
−r=6
= 
r=−6
Step-by-step explanation:
:) This is the answer
Answer:
4
Step-by-step explanation:
Width is 11k^2
Length is 5k^3 + 2k^2
Look at: https://www.wyzant.com/resources/answers/392371/what_is_the_length_and_width_of_the_rectangle
2
it like trying to imagine re-folding back a cardboard box
5 pizzas feeding 20 people means 1 pizza to feed 4 people. 88/4=22 therefore 22 pizzas are needed to feed 88 people.