For a recent year, the rate of first-class postage is as follows: weight not over - - price 1 oz $0.44 2 oz $0.61 3 oz $0.78 3.5 oz $0.95 write a piecewise-defined function to model the cost of c(x) to mail a letter first class if the letter has x ounces, graph the function, and find the cost to mail a letter that is 3.48 ounces.

$0.95

Step-by-step explanation:

Given that weight of the function = x

Given that cost of the postage for mail having weight less than or equal to 1 oz = $0.44

then to find the equation can be written as

C(x)=0.44  where 0<x<=1

Similarly we can write equation for other parts

C(x)=0.61  where 1<x<=2

C(x)=0.78  where 2<x<=3

C(x)=0.95  where 3<x<=3.5

Now we can write them together as piecewise function as shown in below:

to graph that we just draw horizontal lines for each as none equation contains x on the right side .

3.48 oz is less that 3.5 so we will use $0.95.

the answer is b.)

< 1=< 2