5.1 Practice

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an exponential growth function?
Back
An exponential growth function is a mathematical expression that describes a quantity increasing at a constant percentage rate over time, typically represented as y = a(1 + r)^x, where 'a' is the initial amount, 'r' is the growth rate, and 'x' is time.
2.
FLASHCARD QUESTION
Front
Write the exponential growth function for a painting worth $1400 increasing by 9% each year.
Back
y = 1400(1.09)^x
3.
FLASHCARD QUESTION
Front
What does it mean if a model is classified as exponential decay?
Back
Exponential decay refers to a process where a quantity decreases at a consistent percentage rate over time, typically represented as y = a(1 - r)^x, where 'a' is the initial amount, 'r' is the decay rate, and 'x' is time.
4.
FLASHCARD QUESTION
Front
Classify the model A = 1200(0.85)^6 as growth or decay.
Back
Decay
5.
FLASHCARD QUESTION
Front
How do you calculate the remaining amount of a substance after a certain time with exponential decay?
Back
Use the formula A = a(1 - r)^t, where 'A' is the remaining amount, 'a' is the initial amount, 'r' is the decay rate, and 't' is time.
6.
FLASHCARD QUESTION
Front
If an adult takes 400 mg of ibuprofen and it decreases by 29% each hour, how much is left after 6 hours?
Back
51 mg
7.
FLASHCARD QUESTION
Front
What is the formula to calculate the future value of an investment with exponential growth?
Back
The formula is A = P(1 + r)^t, where 'A' is the amount of money accumulated after n years, including interest, 'P' is the principal amount (the initial amount of money), 'r' is the annual interest rate (decimal), and 't' is the time the money is invested for in years.
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