I need this solved please

A(t)=728(1+0.04)^t how much money did aditya originally invest

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

Is there an x intercept in the equation 60*1.15^x