Which of the following represents the difference of the polynomials below? (2xcubed +7x + 10) - (5xcubed +12xsquared+10x+8)

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

For the equations below which statement is true ? -2x=14 6x=-42

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)