The gym teacher has $250 to spend on volleyball equipment. She buys 4 volleyball nets for $28 each. Volleyballs cost $7 each. How many volley balls can she buy
Answer:
she can buy maximum of 19 balls.
Explanation:
Let the number of volleyballs be x
we know that
![\text{(The cost of each volleyball net} * \text{number of volleyball net)}+\text{(the cost of each volleyball} * \text{number of volleyballs)}\leq \ 250](https://img.qammunity.org/2020/formulas/mathematics/middle-school/77i7gkof2j9q7k98wjecx7uvbkjpqofqgl.png)
so substituting the values,
![28(4) + 7x \leq 250](https://img.qammunity.org/2020/formulas/mathematics/middle-school/m1b8vv5xxwim6q1msbww0t9b0ktz5hbrja.png)
![112 + 7x \leq 250](https://img.qammunity.org/2020/formulas/mathematics/middle-school/miwtaw5qemmhcdxtqv7rkv4e56if3lmmeq.png)
![7x \leq 250 - 112](https://img.qammunity.org/2020/formulas/mathematics/middle-school/94kuw0pci52oz5k07zudnnflbg5fbege52.png)
![7x \leq 138](https://img.qammunity.org/2020/formulas/mathematics/middle-school/j7voo0va9r48ddkd8uyyu0ggxyzse3ehd4.png)
![x \leq (138)/(7)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3lueyo80bw1lb0c0k7ut2e29xprjpuuqzr.png)
![x \leq 19.7](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2i0x08or2i6kldek9ld93rfusncz93i9ix.png)