Question

At a convenience store, bottles of water cost $1.20 each. The function f(x)=1.2x gives the cost of buying x bottles. Graph this function and give its domain and range.

Answer 1

I need help

Answer 2

The graph of this function is just a line through the origin with a slope of 12/10 from the coefficient on the x. The domain is:
\[x \ge0\] Because you cannot buy negative water bottles from the store. The range is:
\[y \ge 0\] Because you can buy anywhere from 0 to infinite bottles of water, so the cost can range from 0 dollars to infinite dollars.

Answer 3

thank you