Area of the rectangle is given by the polynomial function A(x)=2x^2+18x. If the width of the rectangle is 2x what is the length?

x + 9

Step-by-step explanation:

Area = 2x^2 + 18x

Width = 2x

Length = ?

The relationship between these quantities is;

Area = Length * Width

Length = Area / Width

Length = (2x^2 + 18x) / 2x

Using long division;

This leads to;

length = x + 9

Checking;

Area = Length * Width

Area = (x + 9) * 2x

Area = 2x^2 + 18x ; This is correct!

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)