A painting canvas has a length 8 inches longer than its width. If the area is

[Sara]

84 in2, what are the dimensions? A)16 inches by 6 inches
B)15 inches by 7 inches
C)13 inches by 5 inches
D)14 inches by 6 inches

 

[Steve]

(w+8)*w = 84 → w²+8w - 84 = 0

w = 6

D)

 

[Let'slearntothink]

The answer is so obvious. And it is D)

 

[Mike]

Look at the possible answers.

A=lw
Which answer multiples to get 84?

 

[Mike]

Look at the possible answers.

A=lw
Which answer multiples to get 84?