A function is a relation in which every input has exactly one output. Which choice represents a function?

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

Paper plates cost $8 per package and plastic utensils cost $5 per package. your supplier delivers 15 packages for a total cost of $90.

Marco states that 7.696696669…… is a rational number because it is a repeating decimal. is he correct? justify your answer.