Answer:
She needs 25 feet
Step-by-step explanation:
10 * 2.5 = 25
Principal amount invested = P=$610
Interest rate =r= 4.1 % = 4.1/100 = 0.041 (decimal form)
Apply the compound interest formula:
A = P (1+r)^t
Where;
A = future value of investment = $900
t = years
Replace:
900 = 610 (1+0.041)^t
Solve for t:
900/610 = (1+0.041)^t
90/61 = 1.041^t
Ln (90/61) = Ln (1.041)^t
Ln (90/61) = t (Ln (1.041))
Ln (90/61) / ln (1.041) = t
t = 9.67 years = 10 years
i am not a robot, but you should download this app called photo math and you jus take a picture of the problem and it does the work for you and it would probably answer this problem no sweat.
Step-by-step explanation:
