Credit Card Debt Graph Can Anyone Help With Intermediate Algebra?

Can anyone help with Intermediate Algebra? - credit card debt graph

The histogram shows the first few years in 1585 U.S. dollars in debt.

The histogram shows the average credit card debt for students with us. The average credit card debt for young people to the debt sophomores up to $ 421 and the average credit card debt for old debt that students in the second year of $ 1265th The combination of debt credit card for a second year, juniors and seniors $ 6429th Determine the average credit card debt for a second year, a junior and a senior.