The area of a rectangular floor is represented by 9x^2+15x square feet and the width of the floor is 3x feet. Which expression represents the length of the floor?

a. 8x ft
b(3x+5) ft
c(3+5x) ft
d(9x^2+12x)ft
I don't know how to solve this.
Help please!

divide the area by the width to get the length

(9x^2 + 15x) / 3x = ?

factor: 9x^2+15x

3x^3+5x^2

Thank you so much @Scott.
Your a lifesaver!

Thanks @Bobpursley

3x+5 !!!!

Ya figured that out

To find the length of the floor, we need to divide the area of the floor by its width. In this case, the area is given as 9x^2 + 15x square feet and the width is given as 3x feet.

So, to find the length, we can use the formula:
Length = Area / Width

Substituting the given values:
Length = (9x^2 + 15x) / (3x)

To simplify the expression, we can divide every term by 3x:
Length = 9x^2 / 3x + 15x / 3x

Simplifying further:
Length = 3x + 5

Therefore, the expression that represents the length of the floor is:
c. (3 + 5x) ft