Please help it due tomorrow and I don't know what to do :)

It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Find the value of x. give reasons to justify your solutions! l, m ∈ kn