Algebra 1
Unit 11
Lesson 4 Practice
Use the scenario below for questions 1-5.
Janice started a bank account for her daughter with $625, which earns 4.75% interest per
year. The amount in her daughters account after x years can be modeled by the function
V(x) = $625(1.0475)*.
1.
Does the equation V(x) = $625(1.0475)* represent exponential growth or decay?
Growth
2.
3.
4.
What is the y-intercept and what does it represent in this situation?
$625 and it represents the starting
balance in the bank
account
Explain why the value of b is not 4.75, the interest rate.
Graph the equation V(x) = $625(1.0475)*.
-3000-
-2000
-1000-
0.
Money
10
30
20
Years