Erica is a marketing researcher involved in improving retail store layouts. She would like to know the order in which various types of products are purchased by customers. She also wants to find out what type of assistance is required by the customers while purchasing products. The best method for Erica to collect this data would be by: Group of answer choices observation. telephonic surveys. voluntary mail-back questionnaires. Delphi technique.

x/3-10=8

x/3=18

x=48

the answer is y = 11.54

hope this : )

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!