HELP?? Winnie needs to travel to Los Angeles. She has decided to go by bus. She researched three different bus companies and complied the following frequency table for all of the ticket prices available leaving on January 29.

Price Interval Frequency
$20-29.99 8
$30-39.99 10
$40-49.99 6
$50-59.99 2
$60-69.99 9
$70-79.99 5

a. Extend the graph by adding a cumulative frequency column.

b. How many prices are at or below $39.99?

c. How many prices are at or above $40?

d. How many prices are between $29.99 and $70?

PLEASE help, I have an F in this class because I had to stay out for a week 3