# Tutor profile: Nicholas K.

## Questions

### Subject: SAT

Mark bought a sweater at the store that was 20% off. If he received an extra 5% discount and had to pay an 8% sales tax. If he paid p dollars at the register, what expression represents the original price of the sweater?

The average test score of a 15-student class is 80. If an extra student was added to the class who scored an 88, what would the new class average be?

### Subject: Pre-Calculus

A ladder is leaning against a tree that is 50 feet tall. If the ladder is 10 feet away from the tree and makes a 55 degree angle with the ground, how tall is the ladder?

A ball is thrown upwards. After t seconds, its height is represented by the function h(t) = 25t - 16t^2. What is the maximum height the ball reaches?

### Subject: Algebra

5 subtracted from two times a certain number is equal to the number plus 6. What is the number?

Two planes start at the same place and travel in opposite directions. One plane travels 20 mph faster than the other. After 2 hours, the planes are 600 miles apart. How fast are the planes traveling?