Iwill mark brainliest who ever hepls!

which set of ordered pairs represents a function?

a) {(0, 1), (1, 3), (1, 5), (2, 8)}

b) {(0, 0), (1, 2), (2, 6), (2, 8)}

c) {(0, 0), (0, 2), (2, 0), (2, 4)}

d) {(0, 2), (1, 4), (2, 6), (3, 6)}

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint