Alexis needs to paint the four exterior walls of a large rectangular barn. The length of the barn is 80 feet, the width is 50 feet, and the height is 30 feet. The paint costs $28 per gallon, and each gallon covers 420 square feet. How much will it cost Alexis to paint the barn? Net of the barn

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Length: 80 ft

Width: 50 ft

Height: 30 ft

I need help on the highlighted section, please help and explain (so I can understand).

Step 1: Find the area of the 4 walls

Find the area of the front and back walls

Find the area of the left and right walls

Add them together

Area= 7,800ft^2

Step 2: Find how many gallons of paint you need using your answer from step 1 if ONE gallon covers 420 square feet.

Gallons

Area Covered

1

6

12

18

19

20

Step 3: Find how much money it will cost to purchase the number of gallons above if 1 gallon costs $28

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Step-by-step explanation:

Step 3: Find how much money it will cost to purchase the number of gallons above if 1 gallon costs $28

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

slope is 35 and 20 miles is the y-intercept.

step-by-step explanation: