<-- 20 points No Trolls please

9

Step-by-step explanation:

The reason for this is because the top row is 1234 you have to take the 27 and divide it by 3 giving you 9  so that means that the ? equals 9

9

Step-by-step explanation:

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

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.