Hey guys! Can anyone solve these for me? I unfortunately don't understand. It would be greatly appreciated! No suspicious sites other than please!

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is

Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0