35 multiple-choice questions in College Board exam style. Each has four choices and a full explanation of why each option is right or wrong.
Decide constant difference vs. constant ratio first. Equal differences over equal intervals mean linear; equal ratios mean exponential. This single check answers many Unit 2 questions.
Use the inverse relationship. To free an exponent, take a logarithm; to free a log, rewrite in exponential form. Then apply the log properties.
Check the domain of every logarithm. Arguments must be positive: reject extraneous solutions.
Read the explanations even when you got it right. Each reinforces a rule that tends to reappear in a slightly different form.