A store offers packing and mailing services to customers. The cost of shipping a box is a combination of a fiat packing fee of $5 and an amount based on the weight in pounds of the box, 8225 per pound. Which equation represents the shipping cost as a function of x, the weight in pounds? 1) = 225x45 5 f(x) = 5x + 225 1 = 2254 - 5 10) = 5% -225​