Pre-Assessment: F.IF.B.6

Gina records the daily change in the share price, p, of a stock every d days. In the table below p is measured in cents. What is the average daily change in the share price from d = 5 to d = 20? d p(d) 0 184 5 39 10 -6 15 49 20 204

11

The relationship between the Celsius (C) and Fahrenheit (F) scales for measuring temperature can be represented by a linear function. A temperature of 50 °F corresponds to 10 °C, and a temperature of 212 °F corresponds to 100 °C. Which statement is the best interpretation of the slope of the graph of this function?

A temperature of 0 °C corresponds to 32 °F.

The depth of a river changes after a rainstorm. The depth of the river, in feet, is modeled as a function of time, in hours. The graph of the function is shown below. ( picture ) Enter the average rate of change for the depth of the river, measured as feet per hour, between hour 3 and hour 21. Round to the nearest tenth.

0.5

Nick notices that the young trees he plants follow a typical growth pattern. During the first years of growth he can model the height of a tree with the function ℎ = -t² + 8t + 9, where t is the time in years since being planted and h is the height in inches. What is the average rate of change, in inches per year, for this function from year 1 to year 4?

3

Susan is recording data about a spider's movements. The graph below shows the distance between the spider and the floor in inches. 1:00 PM is time = 0 seconds on the graph. Over which of the following intervals is the average rate of change equal to -1 inch/second?

5 ≤ x ≤ 10