If 40 people buy lemonade while at the food stand, what percent of the people bought lemonade? Illustrate on the number line.
In the previous exercises it was relatively easy to determine the percent. Sometimes it is a bit trickier.

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints