Which shows the best use of the associative and commutative properties to make simplifying - 5+9 - $ + 2 easier?
A. [2+ i +(-5)] + [(-4) + 9]
O B. (1+9+(-5)] + [2+(-3)
OC. (8 +(-
5)] + [9+(-4) + 2]
OD. [å +(-X)] + [9+2+(-5)]

Ihonestly don’t understand this at all

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

Give the functions f(x) = |x + 2| - 3, what is the domain? a,b,c, or d all real numbers x > 2 x < -2 all real numbers and x cannot equal to 2