The sets a and b are shown below
a= (0,5,10,15)
b=(-4,-2,0,2,10)
find the union of a and b

The union of the sets is {-4,-2,0,2,5,10,15}.

The intersection of the sets is {0,10}.

Step-by-step explanation:

means the list elements that you see in either set:

{-4,-2,0,2,5,10,15}.

Notice I didn't list any element twice for occurring in both sets.

means the elements that occur in both set or the elements you see in common between the two if you prefer this wording of the definition:

{0,10}.

4

step-by-step explanation:

6 (donuts) divided by 3 is 2.

so 2/3 means 2 times 2, which is 4/6.

you get two and your friend gets four.

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)