1.The manager of a theater knows that 900 tickets were sold for a certain performance. If orchestra tickets sold for $3 each and balcony tickets for $2 each, and if the total receipts were $2300, how may of each kind of ticket were sold? 2.On a Christmas package Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing $5.76 in postage? 3.An engineer worked for 6 days and an assistant worked for 7 days investigating the effects of manufacturing processes which contribute to air pollution. Together they received a salary of $450. The following week, the engineer worked 5 days and the assistant worked 3 days for a combined salary of $290. Find the daily wages of each. 4.A store manager has $520 in one-dollar and five-dollar bills. If there are 5 times as many one-dollar bills as five-dollar bills, how many of each kind are there? 5.The sum of the digits of a number is 9. If the digits are reversed, the number is increased by 45. What is the original number? Get out last night’s homework Assign variables and write equations:

TEST MONDAY Topics: 1. Types of Communication Technology 2. Technical Drawing Types (distinguish between them) 3. Basic Sketchup Commands: copy, move, orbit, pan 4. Draw Isometric drawing on Iso graph paper 5. Write equations for 4 problems from front of algebra sheet #2 UNIT 2: Engineering Communication

1.Use dimensional reasoning (and the power-law expression) to determine expressions for the terms on the left side of the equations: 1.W = f(F, d) 2.P = f(F, d, t) 3.F = f(m, a) 4.Eff = f(output, input) 2.Complete front side of worksheet by Wednesday’s class Complete problems #3 and #4 on back of Unit 3 Problem Sheet #1. Review – Homework