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Dmitry [639]
4 years ago
9

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

Mathematics
2 answers:
Anni [7]4 years ago
8 0
1 is <span>y = 15x, in 9 years he will have saved $13,500

2 is </span><span>x2 − 4x − 21

</span>
ValentinkaMS [17]4 years ago
8 0
Question 1. 

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

Answer: <span>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. </span>
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