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anonymous
 one year ago
help please!
The table below shows the square roots of different numbers:
Number
(x) 4 4 9 9
Square root
(y) 2 2 3 3
Part A: Does the table represent y as a function of x? Justify your answer. (5 points)
Part B: The total cost f(x), in dollars, for renting a car for a week and driving it x miles is shown below:
f(x) = 90 + 0.11x
What is the value of f(300), and what does f(300) represent? (5 points)
anonymous
 one year ago
help please! The table below shows the square roots of different numbers: Number (x) 4 4 9 9 Square root (y) 2 2 3 3 Part A: Does the table represent y as a function of x? Justify your answer. (5 points) Part B: The total cost f(x), in dollars, for renting a car for a week and driving it x miles is shown below: f(x) = 90 + 0.11x What is the value of f(300), and what does f(300) represent? (5 points)

This Question is Closed

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0hint: the point x=4 has two images, namely +2 and 2, similarly for point x=9 what can you conclude?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it is not a function?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh so that would be the answer to part a!? thats so much simpler than i thought

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0now i don't understand where f(300) comes into play?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0yes! since your function, doesn't check the general definition of a function

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0it is simple, we have to replace x with 300, so we have to compute this: \[\Large f\left( {300} \right) = 90 + 0.11 \cdot 300 = ...?\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh so that would equal 123?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but what does it represent?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0it is represent the image of the point x=300, by means of your function: dw:1441637275979:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0oops..it represents...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ooh i think i see, alright thank you so much for your help! @Michele_Laino
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