Anyone know what this is

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

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.