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denpristay [2]
2 years ago
5

Find f(g(-4)) if f(x) =7/x+2 and g(x) = (x + 5)^2. Options: -5/2 , -7/2 , 37/4 , 7/3

Mathematics
1 answer:
aev [14]2 years ago
5 0

Answer:

7/3

Step-by-step explanation:

f(x) =7/(x+2)

g(x) = (x + 5)^2

f(g(-4))=

First find g(-4)

g(-4) = (-4+5)^2

        =(1)^2 =1

Then find f(1)

f(1)= 7/(1+2)

   = 7/3

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Answer:

Cost of 1 rose bush = x = $5

Cost of 1 geraniums = y = $2

Step-by-step explanation:

DeShawn and Mike each improved their yards by planting rose bushes and geraniums. They bought their supplies from the same store.

Let us represent:

Cost of 1 rose bush = x

Cost of 1 geraniums = y

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x + 4y = 13..... Equation 1

x = 13 - 4y

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10x + 3y = 56....... Equation 2

We substitute 13 - 4y for x in Equation 2

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