1. Warm up If the rate of tax is 7%, find the total cost of a television that sells for $750. Boiled shrimp sells for $9.25 a pound. Write an equation that describes the total cost (T) is someone buys (P) pound of shrimp. Tax: ($750) (0.07) = $52.50 Final Cost: $750 + $52.50 = $802.50 T=$9.25P

2. Similarity – sides are proportional and angles are congruent. 8 6 10 4 3 5 Scale factor is 2 : 1

3. A tree is 32 feet tall. The tree casts a shadow of length 24 feet. If the shadow of a motel is 60 feet in length, how tall is the motel?

4. Tree: 32 24 Motel: x 60

5. A 42-foot tree casts a 27-foot shadow. At the same time, a flagpole casts a shadow 9 feet long. What is the flagpole’s height?

6. Tree: 42 27 Flagpole: x 9

7. Which of the following is a true statement? A. ∆PQR =∆STU B. ∆PQR ≈ ∆STU C. ∆PQR is both similar & congruent to ∆STU D. ∆PQR is neither similar nor congruent to ∆STU. R 9 6 3 34 8 PQ U S T Answer: D

8. 32 40 54 x B A C D E

9. 6 12 x 7 B A C D E

10. The sheet of paper on the left is a reduced copy of the original. What is the length of the copy to the nearest tenth of an inch? 6 in. 8.5 in. 11 in. x in.