Answer:
a. 4n+4
b. n²+ 2n
c. P=24, A=35
d.n=4
Explanation:
a.the perimeter in terms of n is
n + n + (n+2) + (n+2)= 4n+4
b. area= length x width
area= n x (n+2)
area= n²+ 2n
c. n=5 in the first equation
4(5)+4= 24
p=24
n=5 in the 2nd equation
(5)²+ 2(5)= 35
A=35
d. p=20
20= 4n +4
solve for n by making it subject of formula
4n=20 -4
4n= 16
n= 16/4
n=4