False, -4(X - 5) would be -4x + 20.
6 pies.
If 8 teachers finish one whole pie, and they need to feed 47, then they need 6 pies with 8 slices each aka 48 slices total, there will be one slice leftover for the principal :D
The amount she will receive after 6 years
=$11600*(1+5%*6)
=$11600*1.3
=$15080
Although the question is incomplete, I have seen it before.
The equations are:
3a + 6b = 12
-3a + 6b = -12
Adding the equations, we get:
12b = 0
And b = 0
