Sergei has a credit card that uses the average daily balance method. for the first 12 days of one of his billing cycles, his balance was $350, and for the last 18 days of the billing cycle, his balance was $520. if his credit card's apr is 14%, which of these expressions could be used to calculate the amount sergei was charged in interest for the billing cycle?

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)

wow ok so the answer is 1k or just k

because of combining like terms xd