Colleen buys a movie for $20 and pays 7% sales tax. Her cousin, Brad, lives in another state. Brad buys the same movie for $22 and pays 6% sales tax. Who pays more sales tax? How much more?

This year, 40 students tried out for the softball team. Last year, 8 fewer students tried out. What is the percent increase in the number of students who tried out for the softball team?

Two similar cylinders have surface areas of 40pi square feet and 90pi. What is the ratio of the height of the large cylinders to the height of the small cylinder?

Which rate is a unit rate? $250/40 hours 26 miles/1 gallon 1 cup/3 scoops 300 miles/5 hours

Simplify. (x-3) (x^2-4x-7)

Suppose a triangle has side lengths 5 and 10 and the angle between the two sides is = pie/3. What is the area of the triangle?

Multiply and simplify: 10x (9x^2 + 6x + 7)

B ∩ U A = U (B ∩ A).

Kylee bought a pack of 12 cookies. one-third if the cookies are peanut butter. How many of the cookies in the pack are peanut butter?

How do you know the opposite of a nonzero integer?

The mileages of cars in a fleet of cars are normally distributed with a mean mileage of 52,000 miles and a standard deviation of 2,000 miles. What is the probability of randomly selecting a car with a mileage less than 52,000 miles?