Which number below is irrational? a)√4/9 b) √20 c)√121
Why is the number you chose irrational?

Fiona joins a fruit of the month club. the entry cost was $25 and then she pays $18 per month. if she participates for 8 months, how much will she pay in all? how much in 10 months?

Find the cosine function that is represented in the graph.

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years