Amanda purchased a prepaid phone card for $20. Long distance calls cost 11 cents a minute using this card. Amanda used her card only once to make a long distance call. If the remaining credit on her card is $16.81, how many minutes did her call last?
minutes

What is the quotient of -3/8and-1/3?

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?