Sal is tiling his entryway. The floor plan is drawn on a unit grid. Each unit length represents 1 foot. Tile costs $1.55 per square foot. How much will Sal pay to tile his entryway? Round your answer to the nearest cent.

Step-by-step explanation:

Dividing the entryway into 2 geometry shapes:

Parallelogram

Trapezoid

Area of a parallelogram = base × height

= 4 × 4

= 16 ft^2

Area of a trapezoid = 1/2 × (a + b) × h

= 1/2 × (7 + 4) × 5

= 27.5 ft^2

Total area of the entryway = area of parallelogram + area of trapezoid

= 27.5 + 16

= 43.5 ft^2

If the Tile costs $1.55 per square foot.

Cost of the entry way = $1.55/ft^2 × 43.5 ft^2

= $67.43

Total cost of the tiles at the entryway = $67.43

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3