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oksano4ka [1.4K]
3 years ago
12

Find g of f for f=7x+5 and g(x)=5x^2+4x-3

Mathematics
1 answer:
madreJ [45]3 years ago
7 0
Basically (g of f)x=(f(g(x)) so
g of f=f(g(x))=7(5x^2+4x-3)+5
distribute
f(g(x))=35x^2+28x-21+5=35x^2+28x-16

g of f=35x^2+28x-16
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Step-by-step explanation:

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This question s incomplete, the complete question is;

The Watson family and the Thompson family each used their sprinklers last summer. The Watson family's sprinkler was used for 15 hours. The Thompson family's sprinkler was used for 30 hours.

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Step-by-step explanation:

Given the data in the question;

let water p rate for Watson family and the Thompson family sprinklers be represented by x and y respectively

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x + y = 55  ----------------equ1

x = 55 - y ------------------qu2

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