The store paid $4.50 for a book and sold it for $7.65. What is the profit as a percent of the cost to the store?

Answer:

The expression of the total amount George pay for carpeting is x = 385 × 3.50 .

$ 1347.5 will George will pay for carpeting .

Step-by-step explanation:

Formula

Area of the rectangle = Length × Breadth

Area of a square = a²

Where a is the side of the square .

As given

George wants to put carpeting in a rectangular living room and a square bedroom.

The length and width of the living room is 12 feet by 18 feet one side of the square bedroom is 13 feet .

Area of the living room = 12 × 18

                                      = 216 ft ²

Area of the bedroom =  13²

                                   = 169 ft ²

Total area = Area of the living room + Area of the bedroom

                =  216 + 169

                = 385 ft ²

As given

it will cost 3.50$ per foot to carpet the rooms .

First part

Let us assume that the total amount george will pay for carpeting be x .

Than

x = Total are of the living room and bedroom × cost of per foot carpeting .

x = 385 × 3.50

Second part

x = Total are of the living room and bedroom × cost of per foot carpeting .

x = 385 × 3.50

x = $ 1347.5

Therefore the $ 1347.5 will George will pay for carpeting .

An automated car wash can wash 120 carsin 20 hours.

What is expression?

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is that an automated car wash can wash 30 cars in 5 hours.

Now, an automated car wash can wash 30 cars in 5 hours.

Then, 1 car can be washed in (5/30) hours.

So, 120 cars will take (5/30 x 120) hours

(5/30 x 120)

5 x 4

20 hours

Therefore, an automated car wash can wash 120 carsin 20 hours.

To solve more questions on expressions, visit the link below -

brainly.com/question/1041084

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Answer:

c

Step-by-step explanation: