(3x)^3

(power of a product rule)

Step-by-step explanation:

Here is your workings

(3x)^3  Apply the rule of exponents

Step 2

(3x)^3=3^3x^3  Simplify

Step 3

3^2=27  Solve

27x^3

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer