Answer:
x=6
Step-by-step explanation:
9(8-x)=3x
9 x 8=72
72-9x=3x
72=12x
72/12=6
-31
g(x) = -3x - 1
g(10) = -3(10) - 1
g(10) = -30 - 1
g(10) = -31
there are 9 items in each box
