I NEED HELP WITH ONE OF THESE PLEASE

my teacher didn’t explain to me

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.