Decide if the two quantities listed are directly or inversely proportional to one another. a) The amount of fizz in a can of soda and how long it has been open. O inversely proportional O directly proportional b) The number of air conditioners sold and the daily high temperature. O inversely proportional O directly proportional c) The height of a tree and its age. O inversely proportional O directly proportional d) The speed of a car and how long it takes to stop. O inversely proportional O directly proportional e) How much space there is in a pool and how many people are swimming. O inversely proportional O directly proportional f) The size of your paycheck and how many hours you worked. O inversely proportional O directly proportional

15 describe what is miss leading in the following visual display of data. Choose the correct answer below. A. The wrong impression has been created about how the data or changing because equally spaced intervals or not use on the horizontal axis. B. The scale of the vertical axis makes the differences in bar height look larger than the really are. C. The bars are not skilled proportionally in terms of the data they represent. D. The images in front of or behind each bar makes six looks as though the bars are taller than they really are.

4. Write the following in order from least to greatest. 4.72 × 105, 42.7 × 10², 472, 0.0427 X 107. Sign out INTL O 7:25 @ #3 % bac 9 %3D 4. 5 6 8 2 { } W e r t y u d f k ? C V alt ctrl

b. The amount that a spring stretches is directly proportional to the weight of the object attached to it. If a spring is stretched 10 cm by a weight of 8 kg, how much will it be stretched by a weight of 3 kg? as of: Wednesday, April 14, 2021 pag N3CS21 Practice Set 20

3. The population of maple trees in a park's 0.35-mile radius is 490. Approximate the density of maple trees per square mile. Use 3.14 for T. There are approximately 653 maple trees per square mile. There are approximately 539 maple trees per square mile. There are approximately 1,274 maple trees per square mile. There are approximately 446 maple trees per square mile.