The cost to mail a package is $5 for the first 2 pounds and 40 cents for each additional ounce. which of the following functions represents the cost to mail a package if x is the number of ounces over 2 pounds?
Af(x) = 0.4(x 2)
Bf(x) = 10 0.4x
Cf(x) = 5 0.4x
Af(x) = 0.4(x 2)
Bf(x) = 10 0.4x
Cf(x) = 5 0.4x