Algebra Questions
Not what you're looking for?
1) The spread of a virus in an isolated community is modeled by N(t)=1100/1+49e^-0.3t, where N(t) is the number of people infected after t days.
a) Approximately how many people will be infected in 16 days?
___________
b) How long until 900 people have been infected? Round to the nearest day.
_________days
2) Solve for x: 2^5x-4=3^7x+4
Round to the nearest 0.001.
x=________
3) The radioactive element carbon-14 has a half-life of 5750 years. The percentage of carbon-14 present in the remains of organic matter can be used to determine the age of the organic matter. Archaeologists discovered a linen wrapping from an ancient scroll had lost 24.2% of its carbon-14.
a) If the model A=Ce^kt is used to model the amount of carbon-14 present at time t, determine the value of k. Round to five decimal places.
k=_________
b) Use the model to estimate how old the linen wrapping was when it was found. Round to the nearest year.
__________years.
Purchase this Solution
Solution Summary
The solution contains the solution to the given problems.
Purchase this Solution
Free BrainMass Quizzes
Probability Quiz
Some questions on probability
Geometry - Real Life Application Problems
Understanding of how geometry applies to in real-world contexts
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Exponential Expressions
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.