43. Compound interest If $8500 is invested at 11.5% com- pounded continuously, the future value S at any time t (in years) is given by S= 8500e0.115t (a) What is the amount after 18 months? (b) How long before the investment doubles? 44 Compound interest If $1000 is invested at 10% com

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 11T: Suppose that $12,000 is invested in a saving account paying 5.6% interest per year. (a)Write the...
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#43 do B explain please
hours
0.23 km
(a) 160,48 million
(b) the tenth day
(b) 20 months (x 19.6)
(b) 5.9 years
65.
67. (a)
126
(b) t- 84.7: in 2025
(c) 120 million
1+ 525OO
(b) 639 million
(d)
*I3R, Les 2037
at (10, 18),
20):
3 Equations and Applications with Exponential and Logarithmic Functions 351
43. Compound interest If $8500 is invested at 11.5% com-
pounded continuously, the
(in years) is given by
ture value S at any time t
hat year
on (that
0.115t
S = 8500e
ommo-
(a) What is the amount after 18 months?
(b) How long before the investment doubles?
44. Compound interest If $1000 is invested at 10% com-
pounded continuously, the future value S at any time t
(in years) is given by S = 1000e0.1r.
(a) What is the amount after 1 year?
(b) How long before the investment doubles?
45. Compound interest If $5000 is invested at 9% per year
compounded monthly, the future value S at any time t
(in months) is given by S = 5000(1.0075).
(a) What is the amount after I year?
(b) How long before the investment doubles?
46. Compound interest If $10,000 is invested at 1% per
month, the future value S at any time t (in months) is
given by S =
(a) What is the amount after l year?
(b) How long before the investment doubles?
nanded
s will
%3D
civen
nded
%3D
by
of
10,000(1.01)'.
Transcribed Image Text:hours 0.23 km (a) 160,48 million (b) the tenth day (b) 20 months (x 19.6) (b) 5.9 years 65. 67. (a) 126 (b) t- 84.7: in 2025 (c) 120 million 1+ 525OO (b) 639 million (d) *I3R, Les 2037 at (10, 18), 20): 3 Equations and Applications with Exponential and Logarithmic Functions 351 43. Compound interest If $8500 is invested at 11.5% com- pounded continuously, the (in years) is given by ture value S at any time t hat year on (that 0.115t S = 8500e ommo- (a) What is the amount after 18 months? (b) How long before the investment doubles? 44. Compound interest If $1000 is invested at 10% com- pounded continuously, the future value S at any time t (in years) is given by S = 1000e0.1r. (a) What is the amount after 1 year? (b) How long before the investment doubles? 45. Compound interest If $5000 is invested at 9% per year compounded monthly, the future value S at any time t (in months) is given by S = 5000(1.0075). (a) What is the amount after I year? (b) How long before the investment doubles? 46. Compound interest If $10,000 is invested at 1% per month, the future value S at any time t (in months) is given by S = (a) What is the amount after l year? (b) How long before the investment doubles? nanded s will %3D civen nded %3D by of 10,000(1.01)'.
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