Answer:
4r - 96st
Step-by-step explanation:
Distribute:
4r - 12s8t
(I assume by 12s8t you mean 12s x 8t. If so then here:)
I believe its already in vertex form
Answer:30
question 3: answer is (3,4) --> midpoint
question 4: answer is (7,-5) --> midpoint.
hope this helps.