You deposit 2800 in a savings account that earns 1% annual intrest compounded semiannually. write a function that represents the balance after t years

Function for compound interest:

Amount = Initial amount * ( 1 + (r/n) ) ^ (nt)

where r = interest rate per year, n = period per year

n = 2, r = 0.01

  F(t) = 2,800 * [ 1 + (0.01/2) ] ^ 2t

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)