Chapter 1 Review

Objectives By the end of the class, you will be able to… Write algebraic equations from word phrases Solve one-step equations with one variable

Let’s Review: Equations vs. Expressions Do not have an equals (=) sign Ex: 3x + 5 4y + 8 – 2x Have an equals (=) sign Ex. 3x + 5 = 11 4y + 8 – 2x = 72

Let’s Review: Algebraic Word Phrases is means = Equals means = Ex: nine times a number x minus 95 equals 37 9x – 95 = 37

Let’s Review: Algebraic Word Phrases is means = Equals means = Ex: five times the number x squared plus 26 is 35 5x2 + 26 = 35

Let’s Review: Algebraic Word Phrases Some word phrases have two parts Ex: three times the sum of b and c is 27 3(a + b) = 27

Let’s Review: Algebraic Word Phrases Some word phrases have two parts Ex: 4 times the difference of x and 14 is 32 4(x - 14) = 32

Let’s Review: Algebraic Word Phrases Some equations don’t have a specific answer Ex: five times the number x squared is three times the sum of b and c. 5x2 = 3(b+ c)

Let’s Review: Algebraic Word Phrases Some equations don’t have a specific answer Ex: 16 plus 3 times a number x is the difference of b and c. 16 + 3x = b - c

Your Turn, What’s the Equation? Some equations don’t have a specific answer Ex: 3 times a number x squared is 5 times the difference of b and c.

Your Turn, What’s the Equation? Some equations don’t have a specific answer Ex: 3 times a number x squared is 5 times the difference of b and c. 3x2 = 5(b – c)

What is the equation? The first ice cream plant was established in 1851 by Jacob Fussell. Today, 2,000,000 gallons of ice cream are produced in the US each day. In how many days can 40,000,000 gallons of ice cream be produced in the US?

What is the equation? The first ice cream plant was established in 1851 by Jacob Fussell. Today, 2,000,000 gallons of ice cream are produced in the US each day. In how many days can 40,000,000 gallons of ice cream be produced in the US? 40,000,000 = 2,000,000x