this is my last set of questions if anyone could get them all completed I have 20 points on it If you could add a small explanation so I can learn from it really appreciate it :)

Step-by-step explanation:

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180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)