The number y of calories burned after x hours of rock climbing is represented by the linear function y=650x...

a. What is the domain of the function? Is the domain discrete or continuous?


all real numbers; continuous

all whole numbers; discrete

x≥0; continuous

y≥0; continuous


Explain.


The domain is not restricted, so the time can be any real number.

The time can only be whole numbers of hours greater than or equal to 0.

The time can be any real number greater than or equal to 0.

The calories burned can be any number greater than or equal to 0.