Question

the figure shows the cost of mailing a first - class letter, f(x), as a function of its weight, x, in ounces, for weights not exceeding 3.5 ounces. find f(0.75). what does this mean in terms of the variables in this situation? f(0.75)= what does this mean in terms of the variables in this situation? it costs $ to mail a - ounce first - class letter

Explanation:

Step1: Locate x - value on graph

Locate $x = 0.75$ on the x - axis of the graph.

Step2: Find corresponding y - value

The function is constant in the interval $0

Step3: Interpret the result

In the context of the problem, $x$ is the weight of the first - class letter in ounces and $f(x)$ is the cost in dollars. So it means it costs $0.58$ dollars to mail a $0.75$ - ounce first - class letter.

Answer:

$f(0.75)=0.58$
It costs $\$0.58$ to mail a $0.75$ - ounce first - class letter.