If you invest $2,000 today in a bank that gives you a 4 percent annual interest rate, which of these items can you buy in seven years?

a home theater system worth $3,000

a designer dress worth $2,700

a mountain bike worth $2,500

There is this equation, A = P(1+r)^(t) where A is the ending amount P is the starting amount r is the rate and t is the number of years we can plug in P = 2000 r = 0.04 and t = 7 into this equation and get A = 2000(1.04)^(7) now if you plug that into your calculator, that will be how much money you will have after 7 years the value of the items you can purchase will have to be less than that number

a - base

b - exponent

so,

the base is 8the exponent is 3the exponent tells you to multiply 8 together three timesthe expanded form is 8*8*8