Write a real world problem that could represent the bar diagram shown please please please please help!

Use set buikder notation to represent the following set: {, -2, -1, 0}

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

Ineed with number 6 , explain how to get 1978