Concept explainers
(a)
To write:an expression for the amount of money C spent on Thursday
(a)
Answer to Problem 15STP
The required expression is
Explanation of Solution
Given:
Thursday - spent S0.80 less than this amount
Friday - twice as much as he did on Thursday
Calculation:
To find the amount C spent on Thursday, subtract 0.80 from the amount he spent on Wednesday.
So, the amount Carols spent on Thursday can be expressed as
Conclusion:
Therefore, the required expression is
(b)
To write: an expression for the amount of money C spenton Friday.
(b)
Answer to Problem 15STP
The required expression is
Explanation of Solution
Given:
Thursday - spent S0.80 less than this amount
Friday - twice as much as he did on Thursday
Calculation:
To find the amount C spent on Friday, multiply the amount he spent on Thursday by two.
So, the amount Carols spent on Friday can be expressed as
Conclusion:
Therefore, the required expression is
(c)
To write: the amount of money C spentfor three days
(c)
Answer to Problem 15STP
The amount of money C spentfor three days is
Explanation of Solution
Given:
Thursday - spent S0.80 less than this amount
Friday - twice as much as he did on Thursday
Calculation:
The total amount of money C spent for lunch all three days:
Conclusion:
Therefore, the amount of money C spentfor three days is
(c)
To write: the amount of money C spentfor three days
(c)
Answer to Problem 15STP
The amount of money C spentfor three days is$29.60
Explanation of Solution
Given:
C spent $8 for lunch on Wednesday
Calculation:
Putting value of d = 8,
Conclusion:
Therefore, the amount of money C spentfor three days is$29.60
Chapter 4 Solutions
Pre-Algebra Student Edition
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