At $1.25 per square foot, what is the cost of cleaning a rug with dimensions 9 feet 3 inches by 6 feet 9 inches?

 1 square foot = Cost $ 1.25 
or 
12 X 12= 144 square inches = Cost $ 1.25 

1 square inch cost = 1.25/144 = $ 0.00868 

Rug 9 feet 3 inches X 6 feet 9 inches= (9X12+3) (6X12+9) 
111 inches X 81 inches = 8991 square inches 

Total cost of cleaning the rug = 8991 X 0.00868 
= $ 78.04 

It'll cost you $ 78.04 to clean the rug

The minimum number of 1-gallon cans of paint Lucy needs is 5.

Step-by-step explanation:

Given in the question,

There are 3 bedrooms of dimensions (14*12*8)feets

Thus total area of the room = area of walls+area of 1 ceiling

= (2*area of opposite walls)+(2*area of another set of opposite walls)+ceiling

=(2*14*8)+(2*12*8)+(14*12)

=224+192+168

=584 square feet.

Now deducting the area of doors and windows of area (6.5*2.5)sq ft and (4.5*3)sq ft;

=584-(6.5*2.5)-(4.5*3)

=584-16.25-13.5

=554.25 sq ft.

There are 3 such of bedrooms.Thus;

=3*554.25

=1662.75 sq ft.

Now dividing it with 350 sq ft which is the capaciy paint for 1-gallon container;

=1662.75/350

=4.7507.

which is nearly equals to 5. Thus,the minimum number of 1-gallon cans of paint Lucy needs is 5.