I really need help on these and no this is not graded

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.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x