Answer:

Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube
Let
z-----> the scale factor
x----> the volume of the planet's moon
y---> the volume of the planet
so

In this problem we have

elevated to the cube

Find the percent

Round to the nearest whole number

Answer:
x = -5/2
Step-by-step explanation:
"six less" = -6
"twice the value of x" = x*2= 2x
2x-6