
Concept explainers
a.
To determine the co-efficient of d
a.

Answer to Problem 1.1.2P
The co-efficient of d is 13.25
Explanation of Solution
Given information:the equation which shows the rent of bicycle and helmet is,
Cost of helmet is independent of the number of days.
Formula used:
Equation evaluation
Calculation:
For the co-efficient, the number with d is the co-efficient. Hence, co-efficient is,
13.25
The co-efficient shows the rent of bicycle per day.
b.
To evaluate the expression if helmet’s cost is doubled.
b.

Answer to Problem 1.1.2P
The expression will be
Explanation of Solution
Given information:the equation which shows the rent of bicycle and helmet is,
Cost of helmet is independent of the number of days.
Formula used:equation formation
Calculation:
If the cost of helmet is doubled then expression will be,
On solving,
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