MATH 1306 – Homework Handout # 9

Answers To Odd-numbered Problems

1a.       A(5) = 20000e^0.077(5) = 20000e^0.385 ≈ 20000(1.4696) = 29 392.20 dollars

1b.       A'(t) = 20000 e^0.077t (0.077) = 1540e^0.077t

1c.       A'(5) = 1540 e^0.077(5) =1540 e^0.385 ≈ 1540(1.4696) = 2263.18 dollars per year ;

            After 5 years, the value of the CD is increasing by $2263.18 per year.

3.       

5a.      

5b.      

(number of blocks)(area of 1 block)

(number of blocks)(area of 1 block)≈