Jessica hits a softball into the air. The equation h = -16t2 + 40t+ 2.5 models the height, h, in feet of the ball after t seconds. How long is the ball in the air?

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*