Barney and joan sold birdhouses at a yard sale. they sold the large birdhouses for $12.00 each and the small birdhouses for $8.75 each. on friday they sold 87 birdhouses and made $845.75. how many large and small birdhouses did they sell?

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

How can you tell when x and y are not directly proportional?

Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?