Which of the following best describes the graph below? A. It is a function, but it is not ong to-one.
B. It is a many-to-one function.
C. It is not a function.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Which is the focus of a parabola with equation y2=4x

Answer this question i need as soon as possible