If me. arenth wants to put new carpeting in the room shown, how many square feet should he order

By definition, the area is given by:

A = w * l  

Where,

w: width

l: length

We have two expressions for the length:

L = 14\\L = 5 + 3c

Since the length is the same, we equate both expressions:

5 + 3c = 14  

From here, we clear the value of c:

3c = 14 - 5\\3c = 9  

c = \frac{9}{3}\\c = 3  

Then, we have that the width is given by:

W = 6c-8  

Substituting the value of c we have:

W = 6 (3) -8\\W = 18-8\\W = 10  

Finally, the area is given by:

A = w * l\\A = 10 * 14\\A = 140 ft ^ 2  

he should order 140 square feet

the anwser is d) 75°

step-by-step explanation: