Question

Given the function r(x) = 5x - 3.5, find each value. (Please give steps I don’t understand)

Answer 1

The function values are r(3) = 11.5, r(6 1/2) = 29 and x = -3.5 and the function values are f(-4) = -1, f(1) = -2 and f(4) = -4

How to determine the value of the function?

Function r(x)

The function is given as:

r(x) = 5x - 3.5

When x = 3, we have:

r(3) = 5 * 3 - 3.5

Evaluate

r(3) = 11.5

When x = 6 1/2, we have:

r(6 1/2) = 5 * 6 1/2 - 3.5

Evaluate

r(6 1/2) = 29

When r(x) = -21, we have:

-21 = 5x - 3.5

Add 3.5 to both sides

5x = 3.5 - 21

Evaluate the difference

5x = -17.5

Divide by 5

x = -3.5

Hence, the function values are r(3) = 11.5, r(6 1/2) = 29 and x = -3.5

Function f(x)

The function is represented by the graph

When x = -4, we have:

f(x) = -1

This means that

f(-4) = -1

When x = 1, we have:

f(x) = -2

This means that

f(1) = -2

When f(x) = -4, we have:

x = 4

This means that

f(4) = -4

Hence, the function values are f(-4) = -1, f(1) = -2 and f(4) = -4

Read more about functions at:

brainly.com/question/2328150

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