Question

2 QUESTIONS WILL MARK BRAINLIEST!!!!!!!!!!!!89PTS HELP!!!!!!!!!!!!

Answer 1

1 is y = 15x, in 9 years he will have saved $13,500

2 is x2 − 4x − 21

Answer 2

Question 1. 

30 - 15/ 2 - 1 = 15/1 = 15 
y - 15 = 15(x - 1) 
y - 15 = 15x - 15 
   + 15           + 15
y = 15x 

Answer: y = 15x, in 9 years he will have saved $13,500



Question 2.
(x - 7)(x + 3) 
x^2 + 3x - 7x - 21 (Combine like terms)
x^2 + 4x - 21 <------------------Answer

Thus, the answer is Choice C.