Challenge
Page 295 # 31
7. You have 12 gallons of punch. You estimate that each guest will
drink 3 cups. Do you have enough punch for 60 guests? Justify your
answer.
Page 423 # 24
8. A carpenter is installing a pocket door in a wall. The opening for the
door needs to be 2.5 cm greater than two times the width of the door.
How many centimeters wide should you make the opening for a door
that is 0.8 m wide?
How many centimeters wide is the door?
How wide is the opening for the door?
Page 424 #38
9. A cup of whole milk contains 8.5 grams of fat. Two cups of skim milk
contain 800 milligrams of fat. Find the difference in fat content per cup
of milk.