When a real zero x = a of a polynomial function fis of even multiplicity, the graph of f ---Select-- the x-axis at x = a, and when it is of odd multiplicity, the graph of f ---Select-- the x-axis at x = a.

touches

crosses

Step-by-step explanation:

is said to be a zero of a function if

A zero say has a "multiplicity" equal to , if the factor appears in the polynomial.

When a real zero of a polynomial function is of even multiplicity, the graph of touches the x-axis at , and when it is of odd multiplicity, the

graph of crosses the x-axis at .

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.