Question 81523
Compound interest is computed with {{{e}}}, the natural base for exponential functions.

The formula is {{{A(t) = P * e^(r*t) }}} where P is the principal amount, A(t) is the amount at time t, and r is the rate

Evaluating this I get {{{ 300 * e^(0.06 * 3) = 300 * e^(0.18) = 300 * 1.1972 = 359.17 }}} (correct to two decimal places).