The floor of an elevator in a building is 30 feet above ground level. it travels down to the lower level of the building, where the floor is 10 feet below ground level. what distance has the elevator's floor traveled?

40 feet

Step-by-step explanation:  -10 -30

yes

step-by-step explanation:

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.