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Average and Instantaneous Rates of Change

Total questions: 11

Worksheet time: 1hrs 6mins

Name
Class
Date
1.
f(x) = 2x2 + 12x + 16
What is the average rate of change of f(x) on the interval [-3, -2].
a)
2
b)
1/2
c)
-2
d)
-1/2
2.
What was the average rate of change in the population from 1900 to 1990?
a)
175 million people/year
b)
1.94 million people/year
c)
2.13 million people/year
d)
-1 million people/year
3.

Approximate the instantaneous rate of change of the function at x = -1.

 f(x)=3x2+2x1f\left(x\right)=3x^2+2x-1  

a)

-4

b)

-1/4

c)

3

d)

-2

4.

Find the instantaneous rate of change for f(x) at x = 2 for  f(x) =34x4+2f\left(x\right)\ =-\frac{3}{4}x^4+2  

a)

-24

b)

- 32\frac{3}{2}  

c)

24

d)

- 34\frac{3}{4}  

5.

Find the instantaneous rate of change

a)

88.25

b)

39.5

c)

87.75

d)

88.5

6.

If the position of a particle is represented by s(t) = t2 + 2, what is its instantaneous velocity at t = 3?

a)

5 ft/sec

b)

6 ft/sec

c)

3 ft/sec

d)

4 ft/sec

7.

f(x) = 3x2 + 12x + 16

Estimate the instantaneous rate of change at x = -1.

a)

About 6

b)

About -6

c)

About 0

d)

About 5

8.

Speed

a)

when a distance l is traveled during a time interval Δt is

b)

the time derivative of the displacement (a limit as the time interval approaches Zero)

c)

is the absolute value of the velocity vector. For a moving object, speed is always positive.

d)

finding the rate of change of a function with respect to one of its variables

9.
Which of the following are ways to find the rate of change?
a)
change in y over change in x
b)
rise over run
c)
subtract y coordinates over subtract x coordinates
d)
all of the above
10.
Which of the following are ways to find the rate of change?
a)
change in y over change in x
b)
rise over run
c)
subtract y coordinates over subtract x coordinates
d)
all of the above
11.

Find the average rate of change of f(x)=2x2+3x-1 from 1 to 2.

a)

18

b)

-9

c)

9

d)

3