This is quite easy He spent $300 on specialty tools and $75 on supplies so 300 + 75 = 375 and he charges 125 per horse and 125*3 is 375 so he needs to sell 3 to break even
Answer:
Step-by-step explanation:
dddddddddddddddddddddddddddddddddddddd
Step-by-step explanation:
<u>Step 1: Substitute x from the second equation into the second one</u>
![2x - 9y = 14](https://tex.z-dn.net/?f=2x%20-%209y%20%3D%2014)
![2(-6y + 7) - 9y = 14](https://tex.z-dn.net/?f=2%28-6y%20%2B%207%29%20-%209y%20%3D%2014)
![(2 * -6y) + (2 * 7) - 9y = 14](https://tex.z-dn.net/?f=%282%20%2A%20-6y%29%20%2B%20%282%20%2A%207%29%20-%209y%20%3D%2014)
![-12y + 14 - 9y = 14](https://tex.z-dn.net/?f=-12y%20%2B%2014%20-%209y%20%3D%2014)
![-21y +14 - 14 = 14 - 14](https://tex.z-dn.net/?f=-21y%20%2B14%20-%2014%20%3D%2014%20-%2014)
![-21y/-21 = 0 / -21](https://tex.z-dn.net/?f=-21y%2F-21%20%3D%200%20%2F%20-21)
![y = 0](https://tex.z-dn.net/?f=y%20%3D%200)
<u>Step 2: Substitute y into the second equation</u>
![x = -6y + 7](https://tex.z-dn.net/?f=x%20%3D%20-6y%20%2B%207)
![x = -6(0) + 7](https://tex.z-dn.net/?f=x%20%3D%20-6%280%29%20%2B%207)
![x = 0 + 7](https://tex.z-dn.net/?f=x%20%3D%200%20%2B%207)
![x = 7](https://tex.z-dn.net/?f=x%20%3D%207)
Answer: ![x = 7, y = 0](https://tex.z-dn.net/?f=x%20%3D%207%2C%20y%20%3D%200)