A cube has side length
a. The side lengths are decreased to 30% of their original size. Write an expression in simplest form for the volume of the new cube in terms of
a.

.027(a^3)

Step-by-step explanation:

The volume of a cube is s^3, where s is the sidelength

We plug in .3a for s, because the sidelength has been reduced to 30% of a.

We get (.3a)^3 = .027(a^3)

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.