Question

The following table represents the altitude of a hiker climbing a mountain over a 60-minute hike. Calculate the average rate of change over the interval from 0 to 30 minutes.
time (min)
altitude (It)
0
15
30
45
60
1
42
91
105
121
(1 point)
• The rate of change is about 3 feet per minute
O The rate of change is about 30 feet per minute.
O The rate of change is about 2 feet per minute
IC The rate of change is about 90 feet per minute

Answer 1

A truck is leaving a post office and heading out to deliver mail. The table shows the truck's distanced from the post office at time
t. Calculate the average rate of change over the interval from 8 to 15 minutes
t (min) d (km)
0
8
11
15
22
0
7
11
14
16
(1 point)
© The rate of change is 3.5 kilometers per minute
O The rate of change is 0.8 Kilometers per minute
I© The rate of change is 7 kilometers per minute.
© The rate of change is 1 kilometer per minute

Answer 2

Isaac knew he had to study more in order to improve his math grades. Calculate the average rate of change over the interval from his first exam to his third exam using the table below.
Exam Number
1
2
3
4
5
Score (%)
72
75
84
87
94
(1 point)
C The rate of change is 6 percent per exam.
C The rate of change is 12 percent per exam
© The rate of change is 2 percent per exam.
O The rate of change is 5,5 percent per exam

Answer 3

Find the average rate of change over the interval 0 seconds to 60 seconds.
time (sec)
20
40
60
80
length (in.)
120
110
90
60
40
(1 point)
( The rate of change is 2 inches per second.
C The rate of change is -2 inches per second
The rate of change is 1 inch per second
The rate of change is #1 non per second

Answer 4

Find the average rate of change over the interval 2 minutes to 11 minutes.
time (min)
0
12
11
18
20
distance (km)
0
2
5
6
10
(1 point)
O The rate of change is 3 kilometers per minute.
• The rate of change is 4 of a kilometer per minute
• The rate of change is ‡ of a kilometer per minute.
) The rate of change is 3 kilometers per minute