Ayuda pls Does the graph represent a function? Why or why not?

Answer choices are
A- yes, because it passes the horizontal line test
B- No, because it fails the horizontal line test
C- No, because it fails the vertical line test
D- Yes, because it passes the vertical line test

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?