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3 years ago

9

While shopping for clothes, Alex spent $40 less than 2 times what Gina spent. Alex spent $14. Write and solve an equation to

find how much Gina spent. Let x represent how much spent.

2 answers:

Talja [164]3 years ago

6 0

Answer:

27$

Step-by-step explanation:

14 = 2x - 40

14 + 40 = 2x

54/2 = x

x = 27

Marina86 [1]3 years ago

6 0

Sorry I need points and someone else posted the answer

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Can somebody help me????

ddd [48]

$f(x)=5x^2-3\\\\\\
f(x+a)=5(x+a)^2-3=5(x^2+2ax+a^2)-3=\\\\=\boxed{5x^2+10ax+5a^2-3}$

On the other hand:

$f(x+a)=5x^2+30x+42$

so:

$10ax=30x\\\\10a=30\qquad|:10\\\\\boxed{a=3}$

Answer C.

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