OpenStax, Elementary Algebra 2e §5.6 Graphing Systems of Linear Inequalities · Exercise 129 · Algebra · Systems
Graphing Systems of Linear Inequalities · Exercise 129
Translate to a system of equations and solve.
Kathy left home to walk to the mall, walking quickly at a rate of 4 miles per hour. Her sister Abby left home 15 minutes later and rode her bike to the mall at a rate of 10 miles per hour. How long will it take Abby to catch up to Kathy?
OpenStax, Elementary Algebra 2e · §5.6 Graphing Systems of Linear Inequalities · Exercise 129
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