The Green Party at a large university plans to line both sides of a 50-foot-long hallway with posters endorsing a candidate for state senate. Each of the posters costs them $6,95, they're 2 feet wide, and there will be 6 feet between posters. Assume the first poster on each end will be exactly even with the start of the hall, Estimate how much this will cost

answer: answer is b.

[m < b = 120º]

step-by-step explanation:

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: