Kelsey opened a savings account and deposited 400.00. The account earns 9% interest, compounded continuously. If she wants to use the money to buy a new bicycle in 1 year, how much will she be able to spend on the bike?

פתרון

Ke l sey o p e n e d a s a v in g s a cco u n t an d d e p os i t e d 400.00. T h e a cco u n t e a r n s 9% in t eres t, co m p o u n d e d co n t in u o u s l y . I f s h e w an t s t o u se t h e m o n ey t o b u y a n e w bi cyc l e in 1 ye a r, h o w m u c h w i ll s h e b e ab l e t o s p e n d o n t h e bik e ?

Amount : 437.67

צעדי פתרון

Translate the problem into an equation:

A = 400 e^{0.09 \cdot 1}

400 e^{0.09 \cdot 1} = 437.66971 \dots

Round to the nearest hundredth:

437.67

Amount : 437.67