Answer:
x-axis: Amount of candy sold
y- axis: Amount of money made
Billy is making $0.20 per candy bar.
Linear function: y=3/5x-6
Billy sold 50 candy bars if he made $24.
The x-intercept represents the point when he will earn a profit because at point (5,-3) he sold 5 candy bars but he still made a loss of $3.
The number of different combinations of these items that you can make if you choose four (4) toppings is equal to 1.
<h3>How to calculate the combinations of these items.</h3>
In order to determine the combinations of these items that this person can make, we would use this mathematical model known as combination.
Mathematically, combination is calculated by using this mathematical equation:

<u>Where:</u>
- n is the total number of items.
- r is the number of times of choosing items.
<u>Given the following data:</u>
Let us assume you'll choose four (4) toppings.
Substituting the given parameters into the formula, we have;
⁴C₄ = 4/4
⁴C₄ = 1.
Read more on combination here: brainly.com/question/17139330
Is there any answers to choose from?