Mr. Vans earns 2.5% commission in addition to his salary of $2,200 per month. One month, his sales totaled $18,960. What were his earnings that month?

no solution

step-by-step explanation:

there is not enough information in the problem to solve.

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: