In a study of the relationship between tv viewing and eating habits, a sample of 548 ethnically diverse students from massachusetts was followed over a 19-month period (pediatrics [2003]: 1321–1326). for each additional hour of television viewed per day, the number of fruit and vegetable servings per day was found to decrease on average by 0.14 serving. a. for this study, what is the response variable? what is the predictor variable? b. would the least squares regression line for predicting number of servings of fruits and vegetables using number of hours spent watching tv have a positive or negative slope? justify your choice.

so then what are you asking?

step-by-step explanation:

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.

d. you cannot tell because there are no values shown.

look in attachments

step-by-step explanation:

a = (-2, 0)

b= (-4, 0)

c = (-5,2)

d = (-1,2)