To estimate the proportion of city residents who shop online, a researcher visits a mall on a weekday morning and asks people she encounters to share their experiences with online shopping, including this question: "Do you shop
online at least once each week?" The results show that 32% of shoppers shop online at least once per week. Which
of these describes a likely source of bias present in the survey results?
O Response bias may be present because people may not be truthful with their responses.
O Question wording bias may be present because the question asked may exclude important information
O Nonresponse bias may be present because people in a mall may not want to answer questions.
O Undercoverage bias may be present because people in the workforce and many younger people could be
excluded

Undercoverage bias may be present because people in the workforce and many younger people could be excluded

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.