Please please help help this is for the brainies y’all are amazing thank you

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

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?