I need help!! thank you so much <3

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

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