Question

I need help please--------

Answer 1

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