(Score for Question 2: of 6 points)
2. Decide which estimate is closest to the actual answer. Explain your reasoning.
(a) A store bought 35 lb of produce. If the store spent $100.80, about how much does the produce cost
per pound in dollars? 0.03, 0.3, 3, 30
(b) A 6-pack of juice boxes contains 49.2 oz of juice in total. About how many ounces of juice does each
juice box contain? 0.8, 8, 80, 800
(c) In 20 L of air, there is about 0.78 L of carbon dioxide. About how many liters of carbon dioxide are
there in 1 L of air? 0.04, 0.4, 4, 40
Answer.

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.