If g(x)= x+1/x-2 and h(x) = 4 – X, what is the value of (gh )(-3)?
8/5
5/2
15/2
18/5

Ineed in figuring out this problem.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?