Which expression would be easier to simplify if you used the associative property to change the grouping?
O A. [-12+(-5)] + 36
B. [21+(-14)] +(-53)
C. 67+ ( + (-)]
D. (70+30) + 72

Can someone me and plz do the problem

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2