Use the digits in the number 531,642 to write a number that is greater than a number that is less than 531,642

An appliance salesman sets a goal to sell an average of 6 appliances per day for the first two weeks of his new job. the dot plot shows the number he sold each day during the first 13 days. what is the minimum number of appliances he must sell on the 14th day in order to reach his goal? a) 5 b) 6 c) 7 d) 8

Can someone me i’m confused. will give brainliest and a whole bunch of points

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.