Answer: Option a.
Step-by-step explanation:
The data is:
The cost of mailing a letter is $0.37 for the first ounce.
$0.23 for each additional ounce or portion.
Then if we define the variable n, as the number of additional ounces, we can write this as:
F(n) = $0.37 + n*$0.27
This seems to be a linear relationship, but n only can take whole numbers, this means that if n is equal to 0.37, we should round it up (because we already have more than only one ounce).
Then we round up all the non-integers to the next integer.
for example, we round 1.45 to 2 and 1.876 to 2.
This means that F (1.45) = F(1.876) = F(2) = $0.37 + 2*$0.27
This is called a greastet integer function. then the correct option is a.
