For his long distance phone service, Milan pays a$ 5 monthly fee plus 9 cents per minute. Last month, Milan's long distance bill was $ 18.59. For how many minutes was Milan billed?

Avery has saved $295 to spend on christmas gifts for 11 people. which is the best estimate of the amount he can spend for each person?

How to determine whether two known pairs of points are on the same line.

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?