Help plz! I dont understand this problem? Abi has 20 cents. She bought x pencils for 3 cents each. If y is equal to the number of cents left, write an equation that shows the dependence of y on x. What is the domain of the function?

Please enter in the format below
Thanks!

she bought 6 pencils and has 2 cents left

Step-by-step explanation:

20 divided by 3 = 6.666667

So she can get 6 pencils with the remainder of 2 cents.

x=3 y=?

x=6 y=2

3cents × 6 pencils =18 cents leaving 2 cents 2=y

therefore 6

3+3+3+3+3+3+2=20

8y^50

step-by-step explanation:

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