Answer:
in steps
Step-by-step explanation:
(2n+3)² - (2n+1)² = 4n² + 12n + 9 - 4n² -4n - 1
= 8n + 8 = 8 (n + 1) ... always multiple of 8
-0.5
Answer: a
y=1/2x-3
is the slope intercept form
Hope this helps :) Have a great day!!!