When solving a system of equations algebraically, your final step is 6 = 18. How many solutions does this system have? Yo I need help

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

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

What number is 7 units left of -15?