Find the value of x

Look at picture^^
Answer with work please 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

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

If i have one apple and give you the apple, how many apples do i have?