Answer:
2(-17+a^2+2g^2)
Step-by-step explanation:
step1
Just subsitute 8 for n
1/2(8)^2-1/2(8)
1/2(64)-4
32-4
28
D
Answer:

Step-by-step explanation:
Given: 
We need to completely isolate
to solve.






Finally, multiply both sides by -2 to completely isolate
.

Answer:
1/4 ch a chance of a car any color
Step-by-step explanation:
if you only have 4 cars and they are different colors, you get 1/4 chance to pick one