Answer:
B
Step-by-step explanation
Car A started 10 miles east of Johnstown based on the fact he traveled 90 miles in 2 hours but was 100 away from Johnstown
Car B started 20 miles away, so that mean Car B was 10 more miles east than Car A when they started.
1)12 ÷ 3 = 4.
2) 4×2= 8.
3) 9× 8= 72.
4) 8² = 64
5) 64+ 72 = 136
6) 136 - 7 = 129.
If you just want to simplify the expression you get: 8² + 9(8) - 7
But when you simplify that you get the answer below.
ANSWER: 129
(0,5)
(4,-2)
(-16,17)
just substitute the x and y values from each coordinate into the equation