
a.
To write an inequality equation.
a.

Answer to Problem 5.6.8P
Explanation of Solution
Given information:
O jogged for 2 hours at x miles/hour
O bicycle for 2 hours at y miles/hour
O swam a distance of 2 miles
Total distance did not exceed 30 miles
Calculation:
Distance travelled during jogging= 2x miles
Distance travelled during bicycling= 2y miles
Distance travelled during swimming=2 miles
Inequality Distance constraint
b.
To graph the solution of inequality.
b.

Answer to Problem 5.6.8P
Then graph of inequality is given below
Explanation of Solution
Given information:
Calculation:
Write in slope intercept form
Ordinary equation
Substituting x=0
Then y=14
Substituting y=0
Then x=14
Table of x and y is given below
Then graph is given below
Region
Take a point below the line
Point (0,0) is below line put in inequlity equation
On solving,
Inequality is true
The region is below line
Then graph of inequality is given below
c.
To find greatest possible speed by bicycle.
c.

Answer to Problem 5.6.8P
Maximum possible speed for bicycle is 7.5 miles/hour .
Explanation of Solution
Given information:
Calculation:
Greatest possible distance by bicylce
On solving,
Dividing both side by 2
On solving,
Distance by bicycle in 2 hours is 15 miles
=7.5 miles/hour
Hence, maximum possible speed for bicycle is 7.5 miles/hour .
Chapter ISG Solutions
Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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