Numeric Reasoning>Solving Problems Involving Hard-to-Measure Quantities with Proportionality(TEKS.AQR.9-12.2.C) Practice Test

A drone photo of an Austin festival is divided into equal rectangles. In 6 sampled rectangles, a student counts 84 people. The crowd occupies about 150 rectangles in total (areas with walkways are excluded). Using proportional reasoning and assuming the sampled rectangles are representative of the crowd area, what is the best estimate of total attendance? Set up the proportion $\frac{84}{6}=\frac{x}{150}$ to solve.

A traffic counter records 36 cars in 5 minutes in one lane on a two-lane road (one lane each direction). Assuming the rate stays constant, estimate the total traffic flow in cars per hour for both directions combined. Use the proportion $\frac{36\ \text{cars}}{5\ \text{min}}=\frac{x}{60\ \text{min}}$ and account for two lanes.