Question

Whoever​ can answer this is awesome and is a genius plz help urgent

Answer 1

the side length is 30 feet

Explanation:

we are given cost equation as

`C=(n^2)/(5)+175`

where

C is the cost in dollars

n is a side length in feet

we are given

cost is $355

so, C=355

we can set C=355

and then we can solve for n

`355=(n^2)/(5)+175`

we can subtract both sides by 175

`355-175=(n^2)/(5)+175-175`

`(n^2)/(5)=180`

Multiply both sides by 5

`5* (n^2)/(5)=5* 180`

`n^2=900`

now, we can take sqrt both sides

`n=√(900)`

`n=30`

So,

the side length is 30 feet