7 . E
A rate of x pages per minute is the same as 100 pages per how many
minutes? If y is the number of minutes it takes to print 100 pages, then
you can set up the proportion:8 . C
The given values of x are evenly spaced, and ƒ(x) is a linear (i.e., straight-
line) function, so the values of ƒ(x) will be evenly spaced. The unknown k
is halfway between 2 and 8, so k = 5.9 . B
After spending 30% on rent, Jackie has 70% of her earnings left. Half of
that 70% is 35%, which goes for food and transportation. So the ratio of
rent to food and transportation is 30:35, or 6:7. Now you can set up a
proportion and solve for the rent: