Which of the following relations is a function? A. (1, 1), (-3, 4), (-5, 1), (1, -5) B. (-5, 4), (-3, 6), (-5, 3), (8, 2) C. (-5, 1), (-3, 4), (1, -5), (-3, 6) D. (-5, 1), (-3, -5), (1, 5), (8, 1)

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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!

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

51840000 cm 2

step-by-step explanation: