Carrie makes t-shirts.
production cost: c = 28+3s, where c is the total cost and a is the # of shirts.
amount made: a= 10s, where a is the amount and s is the number of shirts.
how many shirts must carrie sell to make a profit?

the answer is the third / last answer

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.

multiply then divide

step-by-step explanation:

13664

step-by-step explanation:

=cross multiply

=100 x = 13664