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0. Functions(0)

Introduction to Functions
(0)

Piecewise Functions
(0)

Properties of Functions
(0)

Common Functions
(0)

Transformations
(0)

Combining Functions
(0)

Exponent Rules
(0)

Exponential Functions
(0)

Logarithmic Functions
(0)

Properties of Logarithms
(0)

Exponential & Logarithmic Equations
(0)

1. Limits and Continuity(0)

Introduction to Limits
(0)

Finding Limits Algebraically
(0)

Continuity
(0)

2. Intro to Derivatives(0)

Tangent Lines and Derivatives
(0)

Derivatives as Functions
(0)

Basic Graphing of the Derivative
(0)

Differentiability
(0)

3. Techniques of Differentiation(0)

Basic Rules of Differentiation
(0)

Higher Order Derivatives
(0)

Product and Quotient Rules
(0)

The Chain Rule
(0)

4. Derivatives of Exponential & Logarithmic Functions(0)

Derivatives of Exponential & Logarithmic Functions
(0)

5. Applications of Derivatives(0)

Implicit Differentiation
(0)

Logarithmic Differentiation
(0)

Related Rates
(0)

Differentials
(0)

Linearization
(0)

6. Graphical Applications of Derivatives(0)

Intro to Extrema
(0)

The First Derivative Test
(0)

Concavity
(0)

The Second Derivative Test
(0)

Curve Sketching
(0)

Finding Global Extrema
(0)

Applied Optimization
(0)

7. Antiderivatives & Indefinite Integrals(0)

Antiderivatives
(0)

Indefinite Integrals
(0)

8. Definite Integrals(0)

Estimating Area with Finite Sums
(0)

Riemann Sums
(0)

Introduction to Definite Integrals
(0)

Fundamental Theorem of Calculus
(0)

Average Value of a Function
(0)

Substitution for Indefinite Integrals
(0)

Substitution for Definite Integrals
(0)

9. Graphical Applications of Integrals(0)

Area Between Curves
(0)

Introduction to Volume & Disk Method
(0)

10. Integrals of Inverse, Exponential, & Logarithmic Functions(0)

Integrals of Exponential Functions
(0)

Integrals Involving Logarithmic Functions
(0)

11. Techniques of Integration(0)

Integration by Parts
(0)

Improper Integrals
(0)

12. Trigonometric Functions(0)

Angles
(0)

Trigonometric Functions on Right Triangles
(0)

Solving Right Triangles
(0)

Trigonometric Functions on the Unit Circle
(0)

Graphs of Sine & Cosine
(0)

Graphs of Other Trigonometric Functions
(0)

Trigonometric Identities
(0)

Derivatives of Trig Functions
(0)

Integrals of Basic Trig Functions
(0)

Integrals of Other Trig Functions
(0)

13: Intro to Differential Equations(0)

Basics of Differential Equations
(0)

Slope Fields
(0)

Separable Differential Equations
(0)

14. Sequences & Series(0)

Sequences
(0)

Review of Factorials
(0)

Series
(0)

15. Power Series(0)

Power Series & Taylor Series
(0)

16. Probability & Calculus(0)

Continuous Probability Models
(0)

0. Functions

Exponential Functions

0. Functions

Exponential Functions: Videos & Practice Problems

Video Lessons Practice Worksheet

Back to all problems

Back to all problems

14 of 0

Problem 14Multiple Choice

A radioactive substance has an initial activity of $1200$ counts per minute and decays exponentially. After $8$ hours, the activity drops to $300$ counts per minute. At what time will the activity be $150$ counts per minute?

A

$18$ hours

B

$24$ hours

C

$12$ hours

D

$10$ hours

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