How is adding and subtracting decimals similar to adding and subtracting whole numbers

It is similar because with adding and subtracting with whole numbers because you could literally just add a decimal to the whole number. For instance if I'm adding 2 plus 3 it could also be expressed as 2.0 plus 3.0 which would have given you the same answer but just with a .0 at the end of it.

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)