Margie Spencer wants to have $100,000 in her savings account in 20 years. If her account pays 6.6% annual interest compounded semiannually, how much must Margie deposit into her account now to meet her goal?

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

step-by-step explanation:

jbankston is right, use thhe link and you should find the answer.