What's the function notation for this? And which one is the independent and dependent variable?

  f(x) = 0.30x + 2.50

This is the same as writing y = 0.30x + 2.50

Explanation:

x = number of pounds

y = f(x) = total cost in dollars

1 pound costs $0.30

x pounds cost 0.30x

This is ignoring the entrance fee

Tacking on the entrance fee leads to a total of y = 0.30x + 2.50

The independent variable is always x and the dependent variable is always y.

The independent variable (number of pounds) determines what the dependent variable (total cost) will be.

828. all there is to it!

here, if you ever need with rounding (or other forms of arithmetic/math) again, use this:

thats the rounding one, but if you just click the top left, it shows you all the calculators you may need!

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step-by-step explanation:

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