Rhonda deposited $3000 in an account in the Merrick National Bank, earning 4.2% interest, compounded annually. She made no deposits or withdrawals. Write an equation that can be used to find B, her account balance after t years.
Exponential Percent Growth

Quiz
•
Mathematics
•
9th Grade
•
Hard
Anthony Clark
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
B = 3000(1 – 4.2)t
B = 3000(1 + 4.2)t
B = 3000(1 – 0.042)t
B = 3000(1 + 0.042)t
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student invests $500 for x years in a savings account that earns 4% interest per year. No further deposits or withdrawals are made during this time. Write an function f(x) to represent the amount of money earned after x years.
f(x) = 500 (.60)x
f(x) = 500 (.96)x
f(x) = 500 (1.04)x
f(x) = 500 (1.4)x
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
y= 50(1.07)x
Is this growth or decay?
growth
decay
neither
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the percent growth?
50%
1.07%
107%
7%
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the initial amount?
1000
0.65
165
65
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
y = 0.5 (1.081)x
What is the initial amount
1.081
108.1
8.1
0.5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
y = 0.5 (1.081)x
Is this growth or decay
growth
decay
neither
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