Three-sevenths of a number is 21. find the number

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

Which of the following describes how to translate the graph y = |x| to obtain the graph of y = |x+1|+1? shift 1 unit left and 1 unit down shift 1 unit left and 1 unit up shift 1 unit night and 1 unit down shift 1 unit nght and 1 unit up