% of 100 is 14. 1.4,14,.14, or 12?

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left

Express -5 2/5 as an improper fraction.