Beth deposited $4000 in a college fund earning 3.5% simple interest. What was the total interest earned at the end of 12 years?

Assume compounded yearly A = P (1+0.035) ^12 is amount after 12 years A = 4000 (1.035) ^12 = 4000 (1.511) = 6044.27 but 4000 of this is Principal, so Interest is I = A-P = 2044.27 Since this does not fit your options, assume simple interest of 0.035 x 12 years I = (0.035) (12) (4000) = 1680 thus B