What is 7.5% written as a fraction in simplest form

Use set buikder notation to represent the following set: {, -2, -1, 0}

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4