Stephanie is going to paint the walls and ceiling of her bedroom. Her room is 18 feet long, 17 feet wide and 9 feet high. What is the square footage (area) of the walls and ceiling that Stephanie will be painting?

The square footage Stephanie will be painting is square feet. (Enter the number only)

How many gallons of paint does Stephanie have to purchase if each gallon of paint covers 250 square feet?

Stephanie will have to buy gallons of paint. (Remember, you can only purchase a WHOLE number of gallons;Enter the number only)

If each gallon cost $23.75, how much will Stephanie spend on paint?

Stephanie will spend $ on paint. (Enter the number only)

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

24

step-by-step explanation:

2

step-by-step explanation:

where is the gragh

step-by-step explanation: