Bob and Carol want to hire Able Refinishing to sand and refinish the dining room floor to match the floor in the living room. Able charges $2.89 per square foot to sand and refinish a hardwood floor. The dining room is rectangular and measures 17 feet 8 inches by 11 feet 8 inches. Find the area of the dining room floor, rounded up to the next square foot, and the cost of the work.

206.1 ft^2  rounded up to 207 ft^2

$595.66  rounded to $598.23

[The problem says to round UP]

Step-by-step explanation:

Let's convert the dining room measurements into feet.

17' 8" = 17 + 8/12 feet

         = 17.67 feet

11' 8" = 11 + 8/12 feet

        = 11.67 feet

Area = (17.67 feet)*(11.67 feet) = 206.1 ft^2

Area rounded up is 207 ft^2

At $2.89/ft^2, the total cost would be:

  ($2.89/ft^2)*(206.1 ft^2) = $595.66, or

   ($2.89/ft^2)*(207 ft^2) =  $598.23  if the area is rounded up.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

answer:

c) the x-coordinate of the center of the circle increases by 3