Let fat be the explanatory variable and calories be the response variable; which scenario best describes ŷ = 121 + 1.42x? (4 points)

a
the amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. the calorie amount estimated by this model is 121 if there are zero grams of fat.

b
the amount of calories in a cheeseburger increases by 121 for every one gram of fat. the calorie amount estimated by this model is 1.42 if there are zero grams of fat.

c
the amount of fat in a cheeseburger increases by 121 grams for every one calorie. the fat amount estimated by this model is 1.42 grams if there are zero calories.

d
the amount of fat in a cheeseburger increases by 1.42 grams for every one calorie. the fat amount estimated by this model is 121 grams if there are zero calories.

e
the amount of calories in a cheeseburger increases by 1.42 when there are zero grams of fat. the calorie amount estimated by this model is 121 if there is one gram of fat.

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Imagine a new pasture with grass growing on it. every day after the seeds have germinated, the number of blades of grass in the pasture triples. after 18 days, the entire pasture is completely covered in grass. how many days did it take for the pasture to be one-third covered in grass?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?