What is f(3) if f(x) = - 4x + 1 ? ​

Here is the equation:

f(r)=4r+1

You need to find f(3). To do that, substitute all the x's with 3:

f(r)=4r+1->f(3)=4x3+1

The first thing you need to do is multiply 4 by 3. Multiply:

4x3=12

Here is your new equation:

f(3)=12+1

To get your answer, you need to add 12 and 1. Add:

12+1=13

That means:

f(3)=13

If you have any questions, feel free to ask in the comments! :)

Step-by-step explanation:

linear pair postulates

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.