15. Explain the steps in finding the midpoint of the points (-1,2) and (3,-6). Then state what the midpoint is.

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days