Amail courier charges a base fee of $2.95 plus $10.10 per package being delivered. if x represents the number of packages delivered, which of the following equations could be used to find y, the total cost of mailing packages? a. y = $10.10x + $2.95 b. y = $2.95x + $10.10 c. y = $13.05x d. y = $10.10x