Question

The cost of mailing a first-class letter is $0.46 for the first ounce and $0.20 for each additional ounce or portion of an ounce. The letter y represents the total cost for mailing a letter that weighs x ounces. Which type of function model would be appropriate for this situation?a. absolute value function.b. step function.c. linear function.d. square root function.

Answer 1

Answer: Linear function

The cost of mailing a first-class letter for the ounce = $0.46

With an additional ounce = $0.20

Let y = total costfor mailing a letter

let x = ounces

Total cost = cost of mailing a letter for the first ounce + additional cost x number of ounce

Y = 0.46 + 0.20 * x

y = 0.46 + 0.20x

Hence, the above function is a linear function