Which of the following gives an example of a set that is closed under addition?

the sum of an odd number and an odd number

the sum of a multiple of 3 and a multiple of 3

the sum of a prime number and a prime number

none of these are an example of the closure property

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

no because mercury has a density of 13.6 grams per centimeter squared while gold has 19.32 grams centimeter squared

step-by-step explanation:

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours