Political pollsters now make sure to conduct a percentage of their telephone interviews by calling mobile phones. This policy best addresses which potential source of bias?
O Some of the population may not have access to other types of phones.
O The survey only reaches individuals who volunteer to be interviewed.
O The policy helps individuals understanding the wording of survey questions.
O Some individuals contacted may choose to not participate.

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is

hint: which coefficient is a multiple of 360°?

step-by-step explanation:

b and c are the correct answers.

good luck on the quiz! : d