Graham spent a total of $7.25 on 8 oranges and a packet of strawberries. if a packet of strawberries cost $2.85, how much did each orange cost?

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?