Step-by-step explanation:
![f(x) = 2 {x}^{2} + 3x - 3](https://tex.z-dn.net/?f=f%28x%29%20%3D%202%20%7Bx%7D%5E%7B2%7D%20%20%2B%203x%20-%203)
![f( - 1) = 2. {( - 1)}^{2} + 3.( - 1) - 3](https://tex.z-dn.net/?f=f%28%20-%201%29%20%3D%202.%20%7B%28%20-%201%29%7D%5E%7B2%7D%20%20%2B%203.%28%20-%201%29%20-%203)
![f( - 1) = 2 - 3 - 3](https://tex.z-dn.net/?f=f%28%20-%201%29%20%3D%202%20-%203%20-%203)
![f( - 1) = - 4](https://tex.z-dn.net/?f=f%28%20-%201%29%20%3D%20%20-%204)
The answer will be the letter B
87 is greater than 13.688 because 87 is bigger than 13
Y = 2x + 14 (1st)
-4x - y = 4
y = -4x - 4 (2nd)
so
2x + 14 = -4x - 4
6x = -18
x = -3
y = 2x + 14 = y = 2(-3) + 14 = 8
answer y = 8
Convert all to one unit - I'm choosing feet
15 x 10 x 0.5 = 15 x 5 = 75 feet
1 cubic yard = 1 yard x 1 yard x 1 yard = 3 ft x 3 ft x 3 ft = 27 feet?
75/27 = 2.77777778 cubic yards (I think)