<span>No, because postulates are assumptions. Some true, some not. So it can't be used to prove it</span>
It is not necessary that the function decreasing over a given interval always be negative.
A function f(x) (value) decreases as x increases.
This does not mean that value of f(x) is negative.
It can have positive number as range.
i think it's t=0.2 Hope it helps:)
COULD YOU BE Y GIRLFRIEND IF I ANSWER?
So you would do .30 multiply that by 18.99 and your answer would be 5.69
