What is the point of y-4 = 1/2(x-1)

You invested $5000 between two accounts paying 4% and 9% annual interest, respectively. if the total interest earned for theyear was $350, how much was invested at each rate? $was invested at 4% andwas invested at 9%.

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x