Do ASAP OVER DUE points, Brainliest, thanks

Asap describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x)=-5.8sin x. g(x)=sin x. a: vertical stretch by a factor of 5.8, reflection across y-axis. b: vertical stretch by a factor of 5.8,reflection across x-axis. c: horizontal stretch by a factor of 5.8, reflection across x-axis. d: horizontal stretch by a factor of 5.8 reflection across y-axis.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points