Question

For each function, find f(-2), f(-0.5), and f(3).

1. f(x)=-x+4

2. f(x)= 3/8x-3

Answer 1

The values of f(-2), f(-0.5), and f(3) can be solved by substituting the values inside the parentheses to the function to the variable x. We do as follows:

1. f(x)=-x+4

f(-2) =-x+4 = 2+4 = 6

f(-0.5) =-x+4 = 0.5 + 4 = 4.5

f(3) =-x+4 = -3+4 = 1


2. f(x)= 3/8x-3

f(-2)= 3/8x-3 = -15/4

f(-0.5) = 3/8x-3 = -51/16

f(3) = 3/8x-3 = -15/8

Hope these answers the question.

Answer 2

Answer: The calculations are done below.

Step-by-step explanation: We are given to find the values f(-2), f(-0.5) and f(3) for each of the given functions.

The first function is

`f(x)=-x+4.`

So, we get

`f(-2)=-(-2)+4=2+4=6,\\\\f(-0.5)=-(-0.5)+4=0.5+4=4.5,\\\\f(3)=-(3)+4=-3+4=1.`

The second function is

`f(x)=(3)/(8)x-3.`

So, we get

`f(-2)=(3)/(8)(-2)-3=-(3)/(4)-3=-(15)/(4),\\\\\\f(-0.5)=(3)/(8)*(-0.5)-3=(3)/(8)*\left(-(1)/(2)\right)-3=-(3)/(16)-3=-(51)/(16),\\\\\f(3)=(3)/(8)*3-3=(9)/(8)-3=-(15)/(8)`

Thus, all the values are found.