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Chapter 3 Part 2 Test Form B Sections 4, 5, 7, 8, & 9 Name ______________________________ Period # __________ Section 4: B. Find the unit rate. 6.8 miles in 5 minutes. P. Solve the proportion. x4 x2 7 5 A. Express the rate in miles per hour. If necessary, round to the nearest tenth. 20,000 feet in 170 seconds. B. ___________ P. ____________ A. ___________ Section 5: B. ΔEFG ~ ΔHJK. Find HJ. If necessary, round to the nearest tenth. B. ___________ P. ΔABC has vertices A(-8, -6), B(10, -4), C(6, 8). Graph the triangle and its image after a dilation 1 with a scale factor of . 2 A. A tree casts a 38-ft shadow. A boy standing near by casts a 9-ft shadow. His height is 4.2 ft. How tall is the tree? If necessary, round to the nearest tenth. A. ___________ Section 7: B. Write an equation for the problem and solve. 28 is what percent of 400? B. Equation ____________________ B. Answer _________% P. Find the percent of change. Describe the percent of change as an increase or decrease. $ 17.50 to $ 18.55 P. ________________ Increase or Decrease ____________ A. Find the minimum and maximum possible areas for rectangles with the following measured area. 6 in x 8 in A. Min = ___________ Max = ___________ Section 8: B. Simplify the expression 49 121 B. ___________ P. Between what two consecutive integers is the square root? 48 A. Tell whether the expression is rational or irrational and explain why. 0.9 P. ___________ A. Rational or Irrational __________ Why? ___________________________________________________ Section 9: B. Determine whether the given lengths can be sides of a right triangle. 14 in., 18 in., 20 in. Show why or why not in your work. P. Use the triangle at the right. Find the length of the missing side. If necessary, round to the nearest tenth. b = 24, c = 30 A. A 22-ft ladder is placed 7 ft from the base of a building. How high on the building will the ladder reach? B. ___________ P. ___________ A. ___________