Find the range of values of k such that the equation kx^2 - x - 1 = 0 has no real roots

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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.

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion