Let g(x) = 10-x/2+x and then

a)Find g (–1)

b)State the domain of the function

c))Find g (t + 1) and simplify as much as possible

This same question has been answered several times in the last couple of days, but since it is short, here it goes again...

more than likely you meant to type
g(x) = (10-x)/(2+x)

g(-1) = (10+1)/(2-1) = 11

g(t+1) = (10-(t+1))/(2+t+1)
= (9-t)/(3+t)