If g(x)= x+2/x-2 and h(x) = 4 - X, what is the value of (GoH)(-3)? A.) 8/5

B.) 5/2

C.) 15/2

D.)18/5​

A. 8/5

Step-by-step explanation:

please be careful when typing the question. you made a mistake here (you wrote "x+2" instead of "x+1"). luckily you have provided also the screen shot.

the used symbolism of a composite function is nothing else than asking for

g(h(x)) for x=-3.

so, first we need to calculate h(-3) = 4 - -3 = 7

then we take that result as argument for g : g(7) = 8/5

so, altogether

g(h(-3)) = g(7) = 8/5

we can do this generically for x by substituting x in g by the expression of h

g(h(x)) = ((4-x) + 1) / ((4-x) - 2) = (5-x)/(2-x)

for x = -3 this gives (5- -3)/(2- -3) = 8/5

No

Step-by-step explanation:

cosx = siny only if x = y = 45°

Otherwise

cosx° = sin(90 - x)°