Exponential Word Problem

What type of function am I looking for?

• Quadratic

• Parabola

• Exponential

• Linear

• A

• B

• C

• D

• F

• G

• H

• J

What does the number 1,024 stand for?

• Decay Factor

• Growth Rate

• Percent

• Starting Value

A new savings account is opened with $400 and gains 3% every year. What is the exponential function?

y = ​ (a)   ( 1 ​ (b)   ​ (c)   )^x (^ means to power of x - x is the exponent)

• 400

• +

• 0.03

• 3

• 0.3

• 0.97

• 4

Eduardo currently has 500 followers on TikTok. He makes a video after the basketball game and it goes viral! Since he became internet famous, the number of followers is increasing by 25% daily. Write an exponential function that represents the relationship between x, the number of days since Eduardo posted the video and y, the total number of followers Eduardo has.

Mathematical Equivalence

ON

Tags

AI.9.9.C

What is the correct function?

• A

• B

• C

• D

Which equation should be used for this problem? (Hint: Look for a key word!)

• a(1 - %)^x

• a(1 + %)^x

In the equation f(x)=a(b)^x, what is b called when b>1?

• Growth Rate (increase)

• Decay Factor (decrease)

In the equation f(x)=a(b)^x, what is b called when b<1?

• Growth Rate (increase)

• Decay Factor (decrease)