For his long distance phone service, Ryan pays a $6 monthly fee plus 8 cents per minute. Last month, Ryan's long distance bill was $18.64. For how many minutes was Ryan billed?

15.8 I think

Step-by-step explanation:

18.64 - 6 = 12.64

0.8 times 15.8 is 12.64 so I think 15.8

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.