Francis has a credit card that uses the previous balance method. The opening balance of one of his 30-day billing cycles was $0, but this was his balance
for only the first 15 days of the billing cycle. He then made a purchase that
increased his balance to $3600, and his balance stayed this amount for the
remainder of the billing cycle. If his credit card's APR is 21%, how much was
Francis charged in interest for the billing cycle?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)