For the billing period from 4/5 to 5/4, Mary's credit card carried the following balances Dates Balance
4/5-4/10 $300.00
4/11-4/19 $420.00
4/20-5/4 $600.00
*What is the average daily balance for the billing period?
*Assume the credit car has an APR of 21.90%. How much is the finance charge for the billing period? Round answer to two digits after the decimal point.
*What will be the new balance on 5/5?

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)