Ashipping company charges $6 to ship a package that weighs up to 1 pound and $2 for each additional pound or portion of a pound. which of the following equation represents this situation?
a) f(x) = 6 + 2(x - 1) , where x > 0
b) f(x) = 6 + 2(x + 1), where x > 0

Let x be the weight of the package in pounds
We know that if x = 1, the cost is $6
Using this in the given two equations,
6 = 6 + 2((1) - 1)
6 = 6 which is true
OR
6 = 6 + 2((1) + 1)
6 = 10 which is not true
Therefore, the correct equation is the first one. Also, x must be greater than 0 because if we plug in 0 to our correct equation, option A, then the price is less than the minimum that needs to be paid (minimum price when shipping 1 lb)