This should be your answer
Understandable- have a good day
72 what in inches? please clarify
Answer:
300%
Step-by-step explanation:
Given

Required
Find the percentage change in y when x decreased by 50%
First, convert to equation

Where k is the constant of proportionality
When x decreased by 50%



Expand

Substitute
for y



The percentage change is then calculated as:





<em>The percentage in y is 300%</em>
You're basically told that Lin has traveled 20% of 75. Since 20% is one fifth, she has traveled 75/5=15 miles so far.