Question

MEDAL WILL BE GIVEN TO ANYONE WHO CAN HELP.

The table below shows the outputs y for different inputs x:

Part A: Does the table represent y as a function of x? Justify your answer.

Part B: The total cost f(x), in dollars, for renting a paddleboat for x hours is shown below:

f(x) = 20 + 10x

What is the value of f(120), and what does f(120) represent?

120 is the answer because x = 10?

Answer 1

I don't think y is a function of x because for each x there are 2 different y's so how can you model this with an equation?

Answer 2

you can have the same Y for 2 different X's but not vice-versa

Answer 3

i have no idea

Answer 4

ok, that's my answer, y is not a function of x and I said above why is that

Answer 5

ohhhhh

Answer 6

Part B
can you replace x=120 in the formula and find the answer and post it here?

Answer 7

I wasn't reading the squestionr right sorry.

Answer 8

that's ok

Answer 9

i will try

Answer 10

120 = 20 + 10x10 is that what you mean?

Answer 11

no my dear :)
x = 120
f(x) = f(120) = 20 + (120*120) = ???

Answer 12

erm it's not 14,420 is it?

Answer 13

can't possibly be

Answer 14

sorry i stuffed up above
f(120) = 20 + (10*120) = 20 + 1200

sorry it was a typo

Answer 15

Oh so thats the quation ok i see. I solve that?

Answer 16

yes, they are asking you to find the value if f(120) = ???

Answer 17

ok

Answer 18

i'm lost

Answer 19

sorry for being so much trouble i have a hard time with math.

Answer 20

lost where? 20 + 1200 = 1220 which is the answer

Answer 21

.. thats what i thought but okay yeah thanks.

Answer 22

yw :)