The domain of the following relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)} is (1 point) no domain exists {1, 5, 6} {3, 8, 2, 8} {2, 3, 8}

Domain means all the x - values included in a set of data:

{(3, 5), (8, 6), (2, 1), (8, 6)}

It is unnecessary to put two of the same numbers. You only need to put one.

{2, 3, 8}

Hope this helped!

~Just a girl in love with Shawn Mendes

Last option.

Step-by-step explanation:

By definition, the Domain is the set of all the x-coordinates of the ordered pairs (input values) and the Range is the set of all the y-coordinates of the ordered pairs (output values)

In this case you have the following relation:

{}

You can identify that the set of all the x-coordinates is:

{}

You can observe that the input value 8 appears twice, but you only need to write it once.

Therefore, the Domain of that relation is:

{}

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!