142k views
3 votes
A portrait without its frame has a height 1.5 times its width w, in inches. Its frame is 2 in. Wide all along its perimeter. What is an expression for the area of the framed portrait in terms of w?

1 Answer

6 votes

Answer:

The area of the framed portrait is given by

A=1.5w²+10w+16

where A is in square inches and w is width of the portrait in inches.

Explanation:

Given that, a portrait without its frame has height 1.5 times its width w (in inches).

The height of the portrait is (1.5×w)

= 1.5w inches

The frame is 2 inches wide all along its perimeter.

Then, the height of the portrait with frame is = (1.5w+2×2) inches

=(1.5w+4) inches.

The width of the portrait with frame is=(w+2×2) inches

=(w+4) inches.

The area of the portrait with frame is = length×width

=(1.5w+4)(w+4)

=(1.5w²+4w+6w+16)

=(1.5w²+10w+16)

The area of the framed portrait is given by

A=1.5w²+10w+16

where A is in square inches and w is width of the portrait in inches.

User Yorah
by
8.1k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories