$1.$ When Paul was born, his parents invested a principal of $$3000$ at $4\mathrm{.}5\%$ simple interest, paid annually.Today is Pauls $18$th birthday.a$.$ What is the accumulated value of the investment? $(2$ marks$)$b$.$ What is the interest earned on the investment? $(1$ mark$)$c$.$ What is the rate of return on the investment, to the nearest percent?