Distribute
to every term inside the parentheses.

Simplify with multiplication.

You can't simplify further by adding, so leave the answer as-is.
Answer:
56.55
Step-by-step explanation:
C=2πr=2·π·9≈56.54867
First you want to get the x's on the same side
3x-5=2x+6
subtract 2x and add 5
x=11
Hope this helps!
I believe the answer for 17 is C. 18 I am not sure how to do. For 19, however, the answer is B. Hope I help, and sorry I can't answer 18.
Answer:
c
Step-by-step explanation:
the third picture shows symmetry and equality