Simplifying
Decay/Half-life
Growth/Compound Interest
ExpReg - Best fit models
Ms. Wendinger's Mystery Category
100
(x^-3)(x^-5)
What is 1/x^8
100
You bought a car from the dealership and paid $15000 for it. The car depreciates in value 5% every year. After 5 years how much will the car be worth?
What is $11606.71
100
A population of bacteria is being grown on a petri dish. It starts out with 3 bacterium and begins growing at a rate of 32% every day. After 8 days how many bacteria are present?
What is 27 bacteri
100
x values: 1 2 3 4 y values: 500 470 400 300
What is y=625.8(.84)^x
100
Correct - your team gets a sucker. (x^4)(x^-8)/x^3
What is 1/x^7
200
(2x^3)(6x^6)
What is 12x^9
200
You have 40 grams of a radioactive type of uranium whose half life is 12 hours. After 2 days how much uranium will you have left?
What is 2.5 grams
200
Your grandpa put 400 dollars into the bank for you when you were born. It was growing at 4.5% compounded annually. How much money would be in your account when you got to be 12 years old?
What is $678.35
200
(5,320)(7,500)
What is y=104.8(1.25)^x
200
In a basketball tournament, every round, half of the teams get eliminated. If there starts out with 130 teams, how many teams will be left after 4 rounds?
What is 8 teams
300
(10x^14)/(5x^4)
What is 2x^10
300
Matt bought 200 grams of magnesium from the science store. Magnesium's half-life is 3 hours. After one day how much magnesium would Matt have left?
What is .78 grams
300
A town in Arizona has discovered oil in one of their fields. Because of this, the town's population is growing rapidly! There started off with 1230 people in the town and it grew 22% every week. After 4 weeks how many people were in the town?
What is 2724 people
300
(1,234)(2,345)(3,456)
What is y=170.7(1.39)^x
300
When you started your computer software company, you invested 10423 dollars in the bank at 3.4% interest compounded monthly. How much would you have in the bank after 5 years?
What is $12,351.46
400
(5x^2y^5)^0/x^6
What is 1/x^6
400
The population of a town started slowly declining at 2% every year. If the population started at 13,000 how many people would be left after 10 years?
What is 10621 people
400
DOUBLE THE POINTS!! Tamaki decided to put her savings of $700 in the bank at 4.2% interest compounded semi-anually. If she kept it in the bank for 4 years, how much money would she have in the bank?
What is $826.61
400
(3x^4)^2
What is 9x^8
500
(5x^3)^3/x^12
What is 125/x^3
500
You received a substance with the half life of 20 days. How much of the substance would be left after 120 days if you started with 700 grams?
What is 10.9 grams
500
Terry put 16235 dollars in the bank at 2.3% interest compounded quarterly. After 11 years how much would he have in the bank?
What is $17291.90
500
What is Ms. Wendinger's favorite color?
What is yellow