Is x = –4 a valid solution this linear equation?
2x + 9(x – 1) = 8(2x + 2) – 5

Perform the required operations on the following functions given: f(x)= 3-x; g(x)= -2x find g[f(x)]

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28