Answer:it's basically saying 60= 1 hour to walk 5 miles
it's basically saying 12 minutes a mile so it's 60= 1 hour to walk 5 miles.
7x^2-3x - (3x^2 +4x -5) multiply negative one across the entire second term
7x^2 - 3x -3x^2 -4x +5
4x^2 -7x +5
C. 1.5%, 0.125, 3/20, 1 4/5 is the correct answer