ACT Prep 2

The lead of a screw is the distance that the screw advances in a straight line when the screw is turned 1 complete turn. If a screw is  $2\ \frac{1}{2}$ inches long and has a lead of  $\frac{1}{8}$ inch, how many complete turns would get it all the way into a piece of wood?

A boat departs Port Isabelle, Texas, traveling to an oil rig. The oil rig is located 9 miles east and 12 miles north of the boat's departure point. About how many miles is the oil rig from the departure point?

Ding's Diner advertised this daily lunch special: "Choose 1 item from each column--only $4.95!" Thus, each daily lunch special consists of a salad, a soup, a sandwich, and a drink. How many different daily lunch specials are possible?

A DVD player with a list price of $100 is marked down 30%. If John gets an employee discount of 20% off the sale price, how much does John pay for the DVD player?