Answer:
A. Equation is
![c=25+15.75x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/xvgala1038ph3yws3k4dxhmx5i7rhb6qia.png)
B. Cost is $88
Explanation:
A)
Suppose you rent for x hours and each hour costs $15.75
How much would you need to pay?
![15.75x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5jcnn1ci53kbwkntbm57lfrnu4s7d82ugi.png)
Moreover, there is a $25 dollar (fixed) deposit for renting, so that gets added to your payment. All in all, you have to pay
![25+15.75x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/6wpjvt6r9rkj38iavo39dzry60jcngvxlr.png)
This is the equation of renting a snowboard for x hours.
Equation is
![c=25+15.75x](https://img.qammunity.org/2020/formulas/mathematics/middle-school/xvgala1038ph3yws3k4dxhmx5i7rhb6qia.png)
- Where x is the number of hours you rent the snowboard, and
- c is the total cost
B)
If you are renting from 8.30 to 12.30, you are basically renting for 4 hours.
To know how much it will cost, you simply plug in 4 into x (in the equation):
![c=25+15.75x\\c=25+15.75(4)\\c=88](https://img.qammunity.org/2020/formulas/mathematics/middle-school/j639uggsgoxjuzweiwagizjcc39ammejaz.png)
Cost is $88