Answer:
f(0) = 0
f(5) = 65
f(18) = 0
Step-by-step explanation:
If we know that f(x) = x(18 - x), we can do the following to find the needed values.
If we have f(0), then the value is...
f(x) = x(18 - x)
f(0) = 0(18 - 0)
f(0) = 0
If we have f(5), then the value is...
f(x) = x(18 - x)
f(5) = 5(18 - 5)
f(5) = 5(13)
f(5) = 65
If we have f(18), then the value is...
f(x) = x(18 - x)
f(18) = 18(18 - 18)
f(18) = 18(0)
f(18) = 0
