Arectangle's length is 4 feet more than its width. write a quadratic function
that expresses the rectangle's area in terms of its width.
a. a(w) = w^2 – 4w
b. a(w)= w^2+4w
c. a(w)=w+4
d. a(w) = lw

B. A(w)=w∧2+4w

Step-by-step explanation:

Let the width of the rectangle be w.

The length is  4 feet longer than the width= w+4

Area of a rectangle= length× width

A=L×W

=(w+4)×w

Opening the brackets gives the:

A=w²+4w

Therefore the expression for the area in terms of width is A(w)=w∧2+4w

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

a. she will receive a refund of $278.

step-by-step explanation: