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) = 0.41 what does this mean in terms of the variables in this situation? it costs $\square$ to mail a $\square$-ounce first - class letter.

Explanation:

Step1: Locate x=0.75 on graph

The weight \( x = 0.75 \) ounces falls in the interval \( 0 < x \leq 1 \) on the x-axis.

Step2: Find corresponding y-value

The horizontal segment for \( 0 < x \leq 1 \) has a y-value (cost) of \( 0.41 \).

Step3: Interpret the function value

Match \( f(0.75) = 0.41 \) to the context of mailing cost and weight.

Answer:

\( f(0.75) = 0.41 \)
It costs $\boldsymbol{0.41}$ to mail a $\boldsymbol{0.75}$-ounce first-class letter.