Replace x with x+3:
f(x+3) = (x+3)²
which is x² translated 3 units left
Multiply the length and the width giving you 180
Add all of the interior angles to 1260. Then you simplify for x. After that you plug in what you found for X in the E expression.
1.75
Step-by-step explanation:
you want to divide 7 and 4, you should get 1.75.