Question

Can someone pls help me in this part?

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Answer 1

Answers:

f(3) = -7

g(-2) = 1

h(4) = 7

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Work Shown:

`f(x) = 8-5x\\\\f(3) = 8-5(3)\\\\f(3) = 8-15\\\\f(3) = -7\\\\`

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`g(x) = 3x+7\\\\g(-2) = 3(-2)+7\\\\g(-2) = -6+7\\\\g(-2) = 1\\\\`

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`h(x) = (x)/(2)+5\\\\h(4) = (4)/(2)+5\\\\h(4) = 2+5\\\\h(4) = 7\\\\`

As the steps above show, we replace x with the input value in question. Then we follow the order of operations (PEMDAS) to simplify.

Answer 2

f(3) = -7

g(-2) = 1

h(4) = 7

Explanation:

Given f(x) = 8 - 5x

→ f(3) means substitute x = 3 into the function:

⇒ f(3) = 8 - 5(3)

= 8 - 15

= -7

Given g(x) = 3x + 7

→ g(-2) means substitute x = -2 into the function:

⇒ g(-2) = 3(-2) + 7

= -6 + 7

= 1

Given h(x) = x/2 + 5

→ h(4) means substitute x = 4 into the function:

⇒ h(4) = 4/2 + 5

= 2 + 5

= 7