Which angle of rotation is an angle of rotational symmetry for all figures?

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

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

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?