Answer:
a. She ran 7 days
b. 5 miles
Explanation:
a. The line plot shows how many miles Katrina ran last week not days however on the line plot there are 7 x's on it, if she ran once a day, then she ran 7 days last week
b. I'm not sure which equation that you would use but I done something similar to this:
1/4 + 1/2(2) + 3/4 + 1(3)=5