I have no idea what I'm doing

60

Step-by-step explanation:

The two angles that are shown are corresponding meaning that they are the same angles so to solve for x you would set up an equation and because they are the same the equation would be

10x-20=7x+4

step 1 add 20 to each side

10x=7x+24

step 2 subtract 7 from each side

3x=24

step 3 divide  by 3 to each side

x = 8

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.