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Describe the pattern using one variable: (3+9)-2=1+9 (3+4)-2=1+4 (3+90)-2=1+90 Describe the pattern using one variable: 15+2*15=3*15 ⅓+2*⅓=3*⅓ 47.1+2*47.1=3*47.1 Describe the pattern using one variable: 5(3+8)=3*5+8*5 20(3+8)=3*20+8*20 -4(3+8)=3*-4+8*-4 Describe the pattern using one variable: 4(3-2)=4*3-8 4(17-2)=4*17-8 4(-5-2)=4*-5-8 Describe the pattern using one variable: 6-6+5=5 39-39+5=5 4.2-4.2+5=5 Give the amount of money she will have left to spend on advertising after 1, 2, and 3 weeks of advertising. Pearl is starting a lawn mowing business. She plans to spend $1,200 on advertising during the first few weeks that she is in business. Each week she spends $45 to place an ad in a newspaper. Weeks 1 2 3 $ $ $ Amount Write an algebraic expression for the amount she will have left to spend after w weeks of advertising. Weeks 1 2 3 Amount $1065 $1155 $1110 1200+45w 1200-45x 1200-45w 1155-45w Complete the table at right for the number of tiles in each term. Consider the sequence created with square tiles shown below. n 1 4 2 3 tiles Consider the sequence created with square tiles shown below. Write an algebraic expression for the number of tiles needed for the nth term. n 1 2 3 4 tiles 10 4 7 1 Consider the sequence created with square tiles shown below. How many tiles are needed for the 20th term ? n 1 2 3 4 tiles 10 4 7 1 Expression 3n-2 |