Question

WILL FAN AND MEDAL!!!!!!
The table below shows the squares of different numbers:


Number
(x) 2 −2 3 −3
Square of the number
(y) 4 4 9 9


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 rowboat for x hours is shown below:

f(x) = 20 + 3x

What is the value of f(150), and what does f(150) represent? (5 points)

Answer 1

Will fan and medal for correct answer

Answer 2

@ganeshie8

Answer 3

@ParthKohli

Answer 4

A: I don't think that A is a function because 4 square rooted is 2 yes, but 4 square rooted isn't -2. the square of 9 is 3, not -3.

Answer 5

B: f(x) = 90 + 0.11x plug in 300 for x
f(300) = 90 + 0.11(300)
90 is the cost of the car, 0.11 is the cost per mile so x would be any number he drove, it says to use 300, so it implies he drove 300 miles.

Answer 6

why 300 hundred not 150

Answer 7

My bad let me redo that.

Answer 8

@ParthKohli

Answer 9

Sorry for the wait(lag) Y is a function of x because every input value(x) will have only one outcome(y)
f(150)=470 , it means that renting a rowboat for 150 hours will cost $450 +$20 for a flat fee

Answer 10

what do you mean by a is correct i don't understand this question