Help, please the question and thank you

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g