# Bell Ringer Solve the following proportions x/5 = 9/453/4 = x/4412/x = 48/60 On a scale of 1-10, 1 being I have learned nothing and 10 being I have learned.

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Bell Ringer Solve the following proportions x/5 = 9/453/4 = x/4412/x = 48/60 On a scale of 1-10, 1 being I have learned nothing and 10 being I have learned a lot, rate how much you have learned this year and explain why.

Objective I can…… Set up and Solve proportions

Essential questions What does proportional mean? How can we use proportions in everyday life?

Review How do we solve proportions? 4=24 X42 Cross multiply divide

Practice 10 = 40 12 x 7 = 49 X 70 7 = 28 X = 40

Using Proportions in everyday life Sales tax 10.25% How much tax do you pay on a pair of shoes that cost 59.99? X = sales tax X = 10.25 59.99 100 10.25x59.99=614.89 614.89 ÷ 100 = \$6.15

Proportions sales tax Calculate the sales tax of each of the following items. 10.25% Hat 33.99 Jacket 99.99 Jeans 44.50

PERCENT OFF If an hat cost 33.99 but its 20% off, how much do you pay? X = 80 33.99 100 80 x 33.99 = 2719.2 2719.2 ÷ 100 = \$27.19

Percent off Computer cost 399.99. You Get 15% off, how much do you pay? X = 85 399.99 100 85x399.99= 33999.15 33999.15 ÷100=\$ 339.99

White board practice Regular price \$64.99 You get 10% off, how much do you pay? \$58.49

White board practice Regular price \$119.99 You get 25% off, how much do you pay? \$89.99

White board practice Regular price \$225.50 You pay 10.25% sales tax, how much do you pay? \$248.61

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