During a thunderstorm yesterday, 480 millimeters of rain fell in 30 minutes. What is the unit rate for millimeters per minute? Use pencil and paper. Describe a situation in which it would be useful to know this unit rate. Explain why the unit rate would be useful. The unit rate is ___ millimeter(s) per minute.

15 units use socratic

step-by-step explanation: 15 units

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.

5

step-by-step explanation: