What is the last digit of 7^213?
Three possible formulas, all tied closely together.
3 example problems
7x=1
3x^2=6
100(1.02)^6=140
powers of 2
rewriting exponential functions as logarithms
a logarithm is the exponent that we do not know!
solving those logarithms
use the problems we had for homework
Start work on our 10 problems.
For each:
what TYPE of problem is it? (linear, quadratic, exponential)
explain your solving method