12
change the mixed numbers to improper fractions before dividing
1
=
and 15
= 
divide contents of box by a serving
÷ 
change ÷ to × and turn the second fraction upside down
=
× 
=
= 12.26666 = 12 complete servings
(x3)(x4) is x7 because when you have a problem like that, you have to ADD your exponents.
-(m4)3 is -m12 since you're multiplying them.
(z3)5 is z15
y4 x y5 is y9
thats all i know of. hope it helps cx
AC in this problem will equal 87. If the (units) is where you put the put units like feet, inches if there is units.