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## Warm up

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**If the rate of tax is 7%, find the total cost of a**television that sells for $750. Warm up Tax: ($750) (0.07) = $52.50 Final Cost: $750 + $52.50 = $802.50 Boiled shrimp sells for $9.25 a pound. Write an equation that describes the total cost (T) is someone buys (P) pound of shrimp. T=$9.25P**Similarity – sides are proportional and angles are**congruent. 10 8 5 4 6 3 Scale factor is 2 : 1**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?**Tree:**32 24 Motel: x 60 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?**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?**Tree:**42 27 Flagpole: x 9 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?**Which of the following is a true statement?A. ∆PQR**=∆STUB. ∆PQR ≈ ∆STUC. ∆PQR is both similar & congruent to ∆STUD. ∆PQR is neither similar nor congruent to ∆STU. R U 3 4 8 6 S T 3 P 9 Q Answer: D**A**32 B 40 C x E 54 D**A**6 B 12 C 7 E x D**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? 8.5 in. 6 in. 11 in. x in.