Library
Public
Kindergarten
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
10th
11th
12th
Higher Ed
Other
Subjects
ELA
Math
Science
Social Studies
Art
Computer Science
French
German
Music
Physical Education
Spanish
Other
Algebra 1 7-7 Exponential Growth and Decay
starstarstarstarstarstarstarstarstarstar
by Matthew Richardson
| 25 Questions
Note from the author:
A complete formative lesson with embedded slideshow, mini lecture screencasts, checks for understanding, practice items, mixed review, and reflection. I create these assignments to supplement each lesson of Pearson's Common Core Edition Algebra 1, Algebra 2, and Geometry courses. See also mathquest.net and twitter.com/mathquestEDU.
The outlined content above was added from outside of Formative.
The outlined content above was added from outside of Formative.
zoom in
1
10 pts
Solve It! The half-life of a radioactive substance is the length of time it takes for half of the atoms in a sample of the substance to decay. The half-life of uranium-238 is expressed in scientific noation below.
Suppose you have a sample of 1000 uranium-238 atoms. How many atoms of uranium-238 are left after the following number of years?
Enter only the number of atoms.
The outlined content above was added from outside of Formative.
zoom in
2
10 pts
Problem 1 Got It?
A
B
C
D
The outlined content above was added from outside of Formative.
zoom in
4
10 pts
Problem 2 Got It?
A
B
C
D
The outlined content above was added from outside of Formative.
zoom in
5
10 pts
Problem 3 Got It?
A
B
C
D
zoom in
6
10 pts
Problem 3 Got It?
A
B
C
D
zoom in
7
10 pts
A
B
C
D
zoom in
8
10 pts
A
B
C
D
zoom in
9
10 pts
A
B
C
D
zoom in
10
10 pts
A
B
C
D
zoom in
11
10 pts
A
B
C
D
12
10 pts
Vocabulary: How can you tell if an exponential function models growth or decay?
13
10 pts
Reasoning: How can you simplify the compound interest formula when the interest is compounded annually? Explain.
zoom in
14
10 pts
Error Analysis: A student deposits \$500 into an account that earns 3.5% interest compounded quarterly. Describe and correct the student's error in calculating the account balance after 2 yr.
15
10 pts
Review Lesson 7-6: Graph the function. Zoom and pan your graph to establish an appropriate viewing window.

16
10 pts
Review Lesson 7-6: Graph the function. Zoom and pan your graph to establish an appropriate viewing window.

17
10 pts
Review Lesson 7-6: Graph the function on the canvas. Include all relevant graph detail.

18
10 pts
Review Lesson 3-4: Match each value with
• 7x + 2 < 16
• (1/2)t - 4 ≥ -3
• -0.08 > 0.35k - 0.15
19
15 pts
Review Lesson 4-7: Write an explicit formula for each arithmetic sequence.
20
10 pts
Vocabulary Review: Match each situation and the equation that models it.
• A person begins with \$100 and earns \$2 each day.
• A person begins with \$2 and earns \$100 each day.
• A person begins with \$100. Each day the money doubles.
21
10 pts
Vocabulary Review: Match each situation and the equation that models it.
• A person begins with \$100 and earns \$2 each day.
• A person begins with \$2 and earns \$100 each day.
• A person begins with \$100. Each day the money doubles.
22
10 pts
• The amount of money deposited in an account is the __?__.
• The amount of money earned on an investment only is __?__.
• Interest earned on both the principal and the interest left in the account is __?__.
23
10 pts
Use Your Vocabulary: Use the situation below and identify the principal, interest rate, time in years, and balance.
• Principal
• Interest rate
• Time in years
• Balance