Sasha made a small pizza with 4 pieces of ham and 5 pieces of pineapple. She is making a large pizza with 12 pieces of ham. Keeping the same ratio of 4:5, how many pieces of pineapple will she need for the large pizza? 4:5 is equivalent to 12: ?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters