Answer:
![\displaystyle [-8, -10]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5B-8%2C%20-10%5D)
Step-by-step explanation:
12 = x - 2[3x + 14]
12 = x - 6x - 28
12 = −5x - 28
+ 28 + 28
____________

[Plug this back into both equations above to get the y-coordinate of −10]; 
I am joyous to assist you anytime.
D and 3, sorry if wrong hahaha
Answer:
D. 4.8 meters per second
Step-by-step explanation:
1. 65 miles
Explanation: 65(1) = 65
2. 97.5 miles
Explanation: 65(1.5)
3. 39 miles
Explanation: 26(1.5) assuming that 1.5 is the speed.
This might be wrong don't fully rely on me. If someone else's answer looks like this then go for it!!