Idk sorry I'm in high school
The cost of the carpet is $526.75
<h3>Area of triangle and rectangle</h3>
Based on the information given:
The carpet costs $1.75 per square foot
Get the area of the carpet
Area = 24(7) + 7(15) + 0.5(28) + 0.5(28)
Area of the composite figure = 273 + 28
Area of the composite figure = 301 ft²
Cost of the carpet = 301 * 1.75
Cost of the carpet = $526.75
Hence the cost of the carpet is $526.75
Learn more on area of composite figure here: brainly.com/question/21135654
Excuse me but his answer is incorrect. To find the proper rate of change you might have to solve it like you would for slope.
First you would find the points for x = 3 and x = 15 would be (3, 0.08) and (15, 327.68). Then using the slope formula you can find 327.60/ 12. That gives 27.3. So in that case the correct answer is C.
