Sample of 3 items is selected at random from a box containing 20 items of which 4 aredefective. find the expected number of defective items in the sample.

Which parent function is an example of a piecewise function? answers: linear parent function quadratic parent function an exponential parent function absolute value parent function pls i’m sorry if this doesn’t make sense

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?