Please answer this correctly without making mistakes

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

The probability that you roll a two on a six-sided die is 1 6 16 . if you roll the die 60 times, how many twos can you expect to roll

Solve the triangle. a = 21°, c = 105°, c = 5