WILL MARK BRAINLIEST a. After the first 1/8 hours of installing the fence posts, you have used 1/4 of the posts. What is the unit rate you are installing fence posts per hour?
b. Write an equation that represents the relationship between the number of fence posts used, y, in hours.

so I think the answer is b

Step-by-step explanation:

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:

just sum

10 + 10 = 20