Concept explainers
a.
To write an expression.
a.
Answer to Problem 7.2.5P
Explanation of Solution
Given:
Rate of interest=4%
Formula used:
Calculation:
Substituting values,
b.
To find the value of investment changed
b.
Answer to Problem 7.2.5P
Explanation of Solution
Given:
Time1= 2 years
Time2= 8 years
Calculation:
By the end of two years,
Substituting values,
Solving,
By the end of 8 years,
Substituting values,
Solving,
Change In investment, subtract (1) from (2)
Change=
Solving,
=
So,
=
Percentage change in investment=
Substituting values,
=
Solving,
=
Hence, change in investment is
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Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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