Can someone explain to me how i’m supposed to do this

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value