Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. a pollster contacts 78 people in the 18-21 age bracket and finds that 66 of them respond and 12 refuse to respond. when 269 people in the 22-29 age bracket are contacted, 250 respond and 19 refuse to respond. assume that 1 of the 347 people is randomly selected. find the probability of getting someone in the 18-21 age bracket or someone who agreed to respond.

Step-by-step explanation:

so i am confused what exactly do you want me to do?

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!