5x^2 + 9x = -4 solve using quadratic equation

Bruce is getting materials for a chemistry experiment his teacher gives him a container that has 0.25 liter of liquid in it.bruce need to use 0.4 of this liquid for the experiment. how much liquid will bruce use?

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.