1-1: Variables and Expressions Essential Skills: Write verbal expressions for algebraic expressions Write algebraic expressions for verbal expressions

1-1: Variables and Expressions Definitions Algebraic Expression: sums and/or products of numbers and variables Variable: Symbols used to represent unspecified numbers or values Any letter can be used as a variable Term: a number, a variable, or product of number(s) and variable(s)

1-1: Variables and Expressions Definitions Factor: The quantities being multiplied together Product: The result of quantities being multiplied together Power: An expression that contains a base and an exponent Exponent: The number of times the base is multiplied together In the expression xn, x is the base, n is the exponent

1-1: Variables and Expressions Write a verbal expression for the following 8x2 Eight times x squared y5 – 16y y to the fifth power minus sixteen times y Your Turn 7a4 7 times a to the fourth power x2 + 3 x squared added to 3

1-1: Variables and Expressions Operation Addition Subtraction Multiplication Division Verbal Phrases More Than Sum Plus Increased By Added To Less Than Subtracted From Difference Decreased By Minus Product Of Multiplied By Times Of Quotient Of Divided By

1-1: Variables and Expressions Write a algebraic expression for the following 5 less than a number c c – 5 9 plus the product of 2 and d 9 + 2d Two fifths of the area a 2/5 a

1-1: Variables and Expressions Write a algebraic expression for the following Your Turn 9 more than a number h 9 + h The difference of 6 and 4 times a number x 6 – 4x One half the size of the original perimeter p ½ p

1-1: Variables and Expressions Word Problem Mr. Nehru bought two adult tickets and three student tickets for the planetarium show. Write an algebraic expression that represents the cost of the tickets. Let “a” be the cost of each adult ticket and “c” be the cost of each student ticket. The cost of the adult tickets is 2a and the cost of the student tickets is 3c 2a + 3c

1-1: Variables and Expressions Your Turn Lorenzo bought a bag of peanuts that cost p dollars and he gave the cashier a $20 bill. Write an expression for the amount of change that he will receive. 20 – p

1-1: Variables and Expressions Assignment Page 7 1 – 33, odds