Jimmy is selling used books at a yard sale. A customer buys 9 books at a cost of $0. 75 each and pays with a $20. 00 bill. Jimmy

Question

3 years ago

6

Jimmy is selling used books at a yard sale. A customer buys 9 books at a cost of $0. 75 each and pays with a $20. 00 bill. Jimmy

must determine c, the amount of change in dollars he should give the customer. Which equation represents c? 20 minus 0. 75 c = 9 20 minus 0. 75 = 9 c 0. 75 (9) c = 20 0. 75 c 9 = 20.

Mathematics

1 answer:

trasher [3.6K] · Answer 1 · 2022-09-29T18:51:54+03:00

The equation is (0.75)9 + c = 20.

<h2>Linear system</h2>

It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

<h3>Simplification</h3>

Simplification is to make something easier to do or understand and to make something less complicated.

Given

Jimmy is selling used books at a yard sale.

A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill.

The equation.

<h3>How to find the equation?</h3>

A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill.

Let c be the profit.

Profit = Selling price - cost price

c = 20 - (0.75)9

On simplifying, we get