(A) Your sister has loaned you $ 1 , 000 with the understanding that you will repay the principal plus 4 % simple interest when you can. How much would you owe her if you repaid the loan after 1 year? After 2 years? After 5 years? After 10 years? (B) How is the interest after 10 years related to the interest after 1 year? After 2 years? After 5 years? (C) Explain why your answers are consistent with the fact that for simple interest, the graph of future value as a function of time is a straight line (Fig. 1 ).
(A) Your sister has loaned you $ 1 , 000 with the understanding that you will repay the principal plus 4 % simple interest when you can. How much would you owe her if you repaid the loan after 1 year? After 2 years? After 5 years? After 10 years? (B) How is the interest after 10 years related to the interest after 1 year? After 2 years? After 5 years? (C) Explain why your answers are consistent with the fact that for simple interest, the graph of future value as a function of time is a straight line (Fig. 1 ).
(A) Your sister has loaned you
$
1
,
000
with the understanding that you will repay the principal plus
4
%
simple interest when you can. How much would you owe her if you repaid the loan after
1
year? After
2
years? After
5
years? After
10
years?
(B) How is the interest after
10
years related to the interest after 1 year? After
2
years? After
5
years?
(C) Explain why your answers are consistent with the fact that for simple interest, the graph of future value as a function of time is a straight line (Fig.
1
).
One hundred people were surveyed, and one question pertained to their educational background. The results of this question and their genders are given in the following table.
Female (F)
Male (F′)
Total
College degree (D)
30
20
50
No college degree (D′)
30
20
50
Total
60
40
100
If a person is selected at random from those surveyed, find the probability of each of the following events.1. The person is female or has a college degree. Answer:
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2. The person is male or does not have a college degree. Answer:
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3. The person is female or does not have a college degree.
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