2x-5y=14
2(1)-5y=14
2-5y=14
-5y=12
y=-2.4. Hope it help!
We know 350 = 5t^2 + 10
So 5t^2 = 340
t^2 = 68
Take the square root of both sides to get t = 8.246 years.
First put them in order: 12, 12.2, 12.3, 12.6, 12.8, 12.8, 13.5, 13.9, 14, 14.2. The minimum (the lowest) is 12. The median (the middle number) is 12.8. The third quartlile is approximately 13.9. The first quartile is 12.25. He lied about the first quartile :)