Question

The retail flat rate in dollars for first-class mail weighing up to 5 ounces could be computed by the piecewise-constant function f, where x is the number of ounces.(a) Evaluate f(3.8) and f(5). (b) What is the domain of f? What is the range of f?

Answer 1

a)

f(3.8)=1.36

f(5)=1.58

where f(x) represents the retail flat rate in dollars and x is the number of ounces

b)

The domain of the function is the set of all possible values of x in this case

`(0,5\rbrack`

The range of the function is the set of all possible values the function can have

`\lbrace0.70,0.92,1.14,1.36,1.58\}`