What is the average amount purchased per customers in a five day period number of customers 12,15,13,18,21 and the amount purchased is $150,$175,$120,$215,$250

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given

Is the power produced directly proportional to the wind speed, give reasons for your answer?