How do I solve y^2-3/5*y+2/25=0

The quadratic function h(t) = -16.1t^2 + 150 models a balls height, in feet, over time, in seconds, after its dropped from a 15 story building. from what height in feet was the ball dropped?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Aline that intersects one of two parallel lines intersects the other also always sometimes never