Does anyone know the answer to this question? pic is shown

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Use the x-intercept method to find all real solutions of the equation. -9x^3-7x^2-96x+36=3x^3+x^2-3x+8

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?