Answer:
(a) Equations for both
--- lifeguard
--- camp counselor
(b) Total pay for 5 days
Lifeguard pays $800
Camp counselor pays $375
(c) Which pays more
Lifeguard job pays more
Explanation:
Let
![x \to hours](https://img.qammunity.org/2022/formulas/mathematics/high-school/6v1b4fl6ughfbyjhjmz9bk3fj6vp07o9v9.png)
![y \to total\ pay](https://img.qammunity.org/2022/formulas/mathematics/high-school/2slcfoslcupub3tquv9umxxw7yenw3eiim.png)
Given
Lifeguard job
![Signing\ bonus = \$500](https://img.qammunity.org/2022/formulas/mathematics/high-school/svzfcf8jdgmad0lt2t25nva136840tmdcn.png)
![Rate = \$12/hr](https://img.qammunity.org/2022/formulas/mathematics/high-school/3zw1b4hshpp8tqptyhqslch97ighw049n6.png)
Camp counselor job
![Signing\ bonus =\$0](https://img.qammunity.org/2022/formulas/mathematics/high-school/o7sdvejprsjug82u96dkmxzgf5a53am91k.png)
![Rate = \$15/hr](https://img.qammunity.org/2022/formulas/mathematics/high-school/ia3cxl1g33nd3d36nf3ubx4kzekg3x1h9w.png)
Solving (a): The equation for both
The total pay for each job is calculated as:
Total Pay = Signing Bonus + Rate * Hours
So, we have:
Lifeguard
![y = 500 + 12*x](https://img.qammunity.org/2022/formulas/mathematics/high-school/a9fmb1zzypwq8udu81hsrzj9zc69w6jei5.png)
![y = 500 + 12x](https://img.qammunity.org/2022/formulas/mathematics/high-school/8akv93uio07w0oxfgrblybtn6pjr5e2g6r.png)
Camp counselor
![y = 0 + 15 * x](https://img.qammunity.org/2022/formulas/mathematics/high-school/t1a66hp9t3ule5hswk49k14xmy9q7y1n3a.png)
![y = 15x](https://img.qammunity.org/2022/formulas/mathematics/high-school/5m6ohbvlqt6n9qt0twgamxhmvlbqqx5qk9.png)
Solving (b): Total pay for 5 days
First, we calculate the total hours worked in 5 days
![x = 5hrs/day * 5days](https://img.qammunity.org/2022/formulas/mathematics/high-school/z3s4j7kp1ayhp0uuhw4lgfptqu1lwj6cto.png)
![x = 25hrs](https://img.qammunity.org/2022/formulas/mathematics/high-school/zbd4z6a861otflmu3lahb2n0pa0xakl6q8.png)
So, the pay for each is:
![y = 500 + 12x](https://img.qammunity.org/2022/formulas/mathematics/high-school/8akv93uio07w0oxfgrblybtn6pjr5e2g6r.png)
![y =500 + 12*25](https://img.qammunity.org/2022/formulas/mathematics/high-school/7hllcp6yktnevw6125m3ed201xdpfsfr90.png)
--- Lifeguard
![y = 15x](https://img.qammunity.org/2022/formulas/mathematics/high-school/5m6ohbvlqt6n9qt0twgamxhmvlbqqx5qk9.png)
![y = 15 * 25](https://img.qammunity.org/2022/formulas/mathematics/high-school/pnsi7ptt6lmgedgdqsxyzkojumyd97u0ki.png)
--- camp counselor
Solving (c): Which job pays more
By comparing the solution in (b)
![800 > 375](https://img.qammunity.org/2022/formulas/mathematics/high-school/knly9u0qh800k299ts0iiq2v6d73apx20n.png)
Hence, lifeguard job pays more