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Mathematics 20 Online
zarkam21:

help

zarkam21:

1 attachment
Vocaloid:

"rectangle's length is 4 feet more than width" if we let w = width, how do you think we can we write an expression that represents length in terms of w?

zarkam21:

4x

zarkam21:

=

zarkam21:

396

Vocaloid:

in this case, "more" means added to so length = w + 4

zarkam21:

oh okay

Vocaloid:

then area = l*w = (w+4)(w) = 396 solve for w

zarkam21:

I had the right idea

zarkam21:

18?

Vocaloid:

good so 18 = your ans.

zarkam21:

this would be a right because we just did it

zarkam21:

1 attachment
Vocaloid:

be careful, it's asking for the area equation not the length equation area = lw = (w)(w+4) = w^2 + 4w

zarkam21:

C

Vocaloid:

good

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