Answer:
D
Step-by-step explanation:
Add them all then divide the amount of numbers added.
First move +5 to to the other side.
-7x=-16-5
-7x=-21
Then after this devide both sides by negative seven.
X=3
Infinity, because there is no set amount of years the price can rise. The price and keep rising as long as he rents, and it's stated that he will not ever buy a house
None of them are like terms you have 5a 5b and 4