Question

Question 16 of 22 -

MYA-Math-Alg1-CBT-2020-2021: Section 1
Question: 1-16
In the city of Carmen, there is a drawbridge that is opened twice per hour over the summer. The graph below shows the number of feet that the top of the bridge w
minutes that the drawbridge was open.
40
30
Feet Above Water
20
10
+
1
2
3
4
Minutes
The city's engineer noticed that the bridge is not opening and closing at the same rate and wanted to determine the rate of change over these intervals. Complete th
drawbridge (in feet per minute) at each of the specified intervals.
-25 -12.5-5 -2.50 2.5 5 12.5 25

Answer 1

25, 0, -12.5

Explanation:

See attached

Rate of change is:

Interval 0 - 1 min

• (40-15)/(1-0) = 25/1 = 25

Interval 1 - 2 min

• (40 - 40)/(2-1) = 0/1 = 0

Interval 2- 5 min

• (15 - 40)/(4-2) = -25/2 = -12.5