Common Core
A-REI.D.11
3 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Algebra 1 · Chapter 5 · Lesson 2
The crossing point is the answer.
Integrated Math 3 · Chapter 4 · Lesson 3
Solving Exponential and Logarithmic Equations
Getting the unknown out of the exponent.
Linear Algebra · Chapter 2 · Lesson 3
Exactly one, none at all, or infinitely many.