Whos good with proofs ?

given: 7y−84=2y+61

prove: y=29

step reason

7y−84=2y+61

5y−84=61

5y=145

y=29

find the reasons with these below

multiplication property of equality

symmetric property

simplify

given

division property of equality

distributive property

addition property of equality

subtraction property of equality

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Find the solution(s) to x^2-14+49=0

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.