Question

A rectangular swimming pool has a length that is
5
meters longer than
4
times its width. Which equation can be used to represent the area of the swimming pool,
A
, in terms of its width,
w
?


A
=
4
w
+
5


A
=
5
w
+
4


A
=
w
(
4
w
+
5
)


A
=
4
w
(
5
w
+
1
)

Answer 1

Length = 4w + 5, and area = length × width, so A = w(4w + 5). Thus the correct equation is A = w(4w + 5).