How many permutations do you think are possible of ZERO items? In other words what does ZERO equal? Think about it carefully. Explain your answer

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Which table represents a linear function? i'll give brainliest to first answer ^'^