Concept explainers
a.
To find meaning of decrease in investment by 5%
a.
Answer to Problem 7.2.6P
The decrease in investment by 5% means investment value is 95 dollars now.
Explanation of Solution
Given information:
Decrease in investment
Decrease in investment=5%
5% of investment=
Solving,
5% decrease of investment= investment-decrease
= 100-5
Hence, decrease in 5% of investment means loss of 5 dollars.
b.
To explain the statement
b.
Answer to Problem 7.2.6P
The statement is correct.
Explanation of Solution
Given information:
An investment
5% decrease in investment=95 dollars.
Multiplying investment by 0.95=0.95
And,
Multiplying investment by 0.95=95 dollars.
The statement is correct
c.
To write an expression
c.
Answer to Problem 7.2.6P
The equation is
Explanation of Solution
Given information:
Time given=
Investment=
Calculation:
The equation is
Where
d.
To find percentage change of investment
d.
Answer to Problem 7.2.6P
Percentage change in investment is
Explanation of Solution
Given information:
Calculation:
For
Substituting value of t,
Solving,
(1)
For
Substituting values,
Solving,
Change in investment=
Solving,
=
So,
=
Percentage change=
Solving,
=
Hence, percentage change in investment is
Chapter ISG Solutions
Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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