Asmall school employs 5 teachers who make between $40,000$70,000 per year. the newest teacher, valerie, decides to teach part-time which decreases her salary from $40,000$20,000 per year. the rest of the salaries stay the same. how will decreasing valerie's salary affect the mean and median?

answer: (1,3) (3,-1) (5,-5) ?

step-by-step explanation:

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!

the first option i believe

step-by-step explanation: