If we know its slope is -5 and y-intercept is 4, then what is the equation of the line in slope-intercept form?

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

Which function has the domain x> -11

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.