af 0.0071, af дr = 5769, af = -1.5467 ЭР aN Estimate: (a) The change in monthly payment per $1000 increase in loan principal (b) The change in monthly payment if the interest rate increases to r = 6.5% and r = 7% (c) The change in monthly payment if the length of the loan increases to 24 years

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter6: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 5RE: A retirement account is opened with an initialdeposit of 8,500 and earns 8.12 interest compounded...
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The monthly payment for a home loan is given by a function
f (P, r, N), where P is the principal (initial size of the loan), r the interest
rate, and N the length of the loan in months. Interest rates are expressed as
a decimal: A 6% interest rate is denoted by r = 0.06. If P = $100,000,
r = 0.06, and N = 240 (a 20-year loan), then the monthly payment is
f(l00,000, 0.06, 240) = 716.43. Furthermore, at these values, we have

af
0.0071,
af
дr
= 5769,
af
= -1.5467
ЭР
aN
Estimate:
(a) The change in monthly payment per $1000 increase in loan principal
(b) The change in monthly payment if the interest rate increases to r =
6.5% and r = 7%
(c) The change in monthly payment if the length of the loan increases to
24 years
Transcribed Image Text:af 0.0071, af дr = 5769, af = -1.5467 ЭР aN Estimate: (a) The change in monthly payment per $1000 increase in loan principal (b) The change in monthly payment if the interest rate increases to r = 6.5% and r = 7% (c) The change in monthly payment if the length of the loan increases to 24 years
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