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10. CosS REASONING The cost of sending cell phone pictures is given by 0.25x, where xis the number of pictures that you sendand 9ssskevestiY 'dol) dollars Writ...

Question

10. CosS REASONING The cost of sending cell phone pictures is given by 0.25x, where xis the number of pictures that you sendand 9ssskevestiY 'dol) dollars Write the equation in function notation Interpret the function in terms of the context: Find f(5) and f(12). What do these values represent?

10. CosS REASONING The cost of sending cell phone pictures is given by 0.25x, where xis the number of pictures that you sendand 9ssskevestiY 'dol) dollars Write the equation in function notation Interpret the function in terms of the context: Find f(5) and f(12). What do these values represent?



Answers

The figure shows the cost of mailing a first-class letter, $f(x),$ as a function of its weight, $x,$ in ounces. Use the graph to solve Exercises.
Find $f(3) .$ What does this mean in terms of the variables in this situation?

We need to write a symbolic representation of the number of dollars in X quarters and then evaluate that function when X is equal to 10. So our function is 1/4 times X. When we replaced 1/4 times. When we replace X with 10, we get 10/4, And that reduces to two 0.5.

To find of 3.5. If our actives 3.5, that's right here over, why is 1.5? So this means that if you have a package that weighs 3.5 ounces, the cost of delivering it would be $1.5.

Okay, so the following function does not make sense because they're saying the cost per minute of a phone call is $30 in that base cost. The plan is eight cents. Um, this should be flipped. The base costs would be eight cents. And or rather, um, the base costs should be $30 and the cost apartment per minute would be eight cents. It is much more reasonable than $30 per minute. I don't think anyone would get a phone if that was the case. Thus statement or rather, we could just say statement does not make sense.

Okay, so we have the figure in your textbook. It shows the cost of mailing a first class letter f of X as a function of its weight, X and ounces For what? It's not exceeding 3.5 ounces, so we need to find effort. Three. Oops. So F at three is equal to If we look at our graph circles, that air not filled in means not including circles that are filled in. I mean, including So we see that at X equal to three, then the Y value is equal to 0.78 so it costs 78 cents to mail a three ounce first class letter.


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