Getting a sum of either 5, 11, or 12 on a roll of two dice. Can someone please explain what I need to do in order to go about solving this problem? ​

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.

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Ineed to know the answer to this algebra question.