Classwork Answers2-1 P. 85 #s 23-51 odd

Homework Answers2-1 P. 85 #s 22-50 even22) 56 40) 6524) -9.6 42) 2726) 8 44) -1 3/5 = -1.6 = -8/528) 29 46) 1 3/7 = 10/730) -24 48) -1432) 3.5 50) c = number of CDs 34) 84 already on rack;36) 91 c + 7 = 30; c = 2338) 28

2-2 Solving Two-Step Equations

Objective: To solve two-step equations in one variable

Warm up: The diagram shows the amount of money that each player starts with in a video game. To be fair, each player should have the same amount of money. If each chest contains the same amount of money, how much money must be in each chest? How do you know?

$_____________________ = $_______Each chest must have $_____ because_____________________________.

Two-Step EquationsAn equation with two operations

**Reverse PEMDAS solves a two- step operation. **

Ex 1: Solve for x2 𝑥+3=15

Ex 2: Solve for t

5=𝑡2−3

Ex 3: Word ProblemYou are making a bulletin board to advertise community service opportunities in your town. You plan to use half a sheet of construction paper for each ad. You also need a title banner. You need 5 sheets of construction paper for a title banner. You have 18 sheets of construction paper. How many ads can you make?Relate _____________________________________

Define Let ___ = the number of ads you can make.

Write =Equation

You can make ___ community service advertisements for the bulletin board.Check

Ex 4: Word ProblemSuppose you used one quarter of a sheet of paper for each ad and four full sheets for the title banner. How many ads can you make?

Relate ____________________________________________

Define Let ___ = the number of ads you can make.

Write =Equation

You can make ___ community service advertisements for the bulletin board.Check

Ex 5: Solve for x𝑥−73

=−12

Ex 6: Solve for x

6=𝑥−24

Homework

Page 91 # 12-36 Even

ClassworkPage 91 #s 11-35 odd

Homework Answers2-2 P. 91 #s 12-36 even12) n = 5 26) y = 24 14) y = -50 28) z = 8

16) x = 72 30) x = 12 18) c = -3 32) d = -720) a = 100 34) b = -522) k = -5.5 36) x = -624) 3 bottles of olive oil