Hi there!
First we need to remember the following.

Now substitute both of the formulas.

Work out the parenthesis.

And finally collect terms.

~ Hope this helps you!
N/4.3 = 9.4
4.3 × n/4 = 9.4 × 4.3
n = 40.42
C = 18m + 60
if it’s slope intercept form you want
Step-by-step explanation:
Hello there!
Just double the given sides!
(18*2)+(12*2)=60 cm.
There you are!
:)
Answer:
I would need to see an actual table to answer this question.