The probability that an event will happen is Upper P (Upper E )equalsStartFraction 15 Over 23 EndFraction . Find the probability that the event will not happen. The probability that the event will not happen is nothing.

your answer would be 12

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.

h * s * a

h = history teacher

s = science teacher

a =   art teacher.

i see no data table, but just multiply the number of history teachers, science teachers, and art teachers.