Solve for x only type in numbers what are these called​

If angle 2=3x +1 and angle 3=2x +4what is angle 2

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3