the value 5 is an upper bound for the zeros of the function shown below f(x)=x^4+x^3-11-9x+18 please help

If jm equals 5x -8 and lm equals 2x -6 which expression represents jl

At which value in the domain does f(x) =0?

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.