Full Question:
The student council needs posters for the Winter Carnival. The print shop charges $15 for each print job. Each poster will cost an additional $1.35.
Which equation shows the relationship between the number of posters, n, and the total cost, c, in dollars?
Answer:
![C = 15 + 1.35n](https://img.qammunity.org/2021/formulas/mathematics/high-school/v0hwzo11b8shexwu02gypy787nrg5zyvjb.png)
Explanation:
Given
![Base\ Charge = \$15](https://img.qammunity.org/2021/formulas/mathematics/high-school/9wixu5hd19ovbg7yie7g63qc79twv2nbfz.png)
![Cost\ per\ print = \$1.35](https://img.qammunity.org/2021/formulas/mathematics/high-school/jxecs62y4hls1jnl1azo988rb8ja0jdfvc.png)
Required
Determine an equation to calculate the total cost
First, we need to determine the cost of n posters;
If 1 poster costs $1.35, then
![n\ posters = n * 1.35](https://img.qammunity.org/2021/formulas/mathematics/high-school/d5wtalz4s7vd4kvv2n8jqknrev5dnmmuas.png)
![n\ posters = 1.35n](https://img.qammunity.org/2021/formulas/mathematics/high-school/m9qqhjaal05hwkef9d8qnt9fkfrybydey3.png)
Next, add the cost of n posters to the base charge. This gives total cost (C)
![C = Base\ Charge + n\ posters](https://img.qammunity.org/2021/formulas/mathematics/high-school/sip2p6j5yjknya5emz441tll8zx9myxkgo.png)
![C = 15 + 1.35n](https://img.qammunity.org/2021/formulas/mathematics/high-school/v0hwzo11b8shexwu02gypy787nrg5zyvjb.png)