For making a scatter plot of the data set, which would be the best scale and interval for the axis

that represents the amount of fluoride?

0.5

2.5

water (l)

fluoride (mg)

1

0.4

0.5

0.4

0.8

0.6

2

1.6

1.5

0.8

1 to 3 with intervals of 1

1 to 25 with intervals of 0.5

0 to 2 with intervals of 0.2

oto 5 with intervals of 0.1

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

step-by-step explanation:

your answer is a