Question

I can evaluate functions in function notation (12B)

I can graph linear functions on a coordinate plane (30)
17. h(x)= 72 x-25, find h(-6)
18. g(x) = 5x2 + 4x - 3, find g(2)

Answer 1

(17)

Answer:

`h(-6) = -457`

Explanation:

Given the function

`h(x)= 72 x-25`

Put
`h = -6` to in the function

`h(x)= 72 x-25`

`h\left(-6\right)=\:72\left(-6\right)-25`

`=-432-25`

`=-457`

Therefore,

`h(-6) = -457`

(18)

Answer:

`g(2)=25`

Explanation:

Given the function

`g\left(x\right)\:=\:5x^2\:+\:4x\:-\:3`

`g\left(2\right)\:=\:5\left(2\right)^2\:+\:4\left(2\right)\:-\:3`

`= 20 + 8 - 3`

`= 25`

Therefore,

`g(2)=25`