Andrew can paint the neighbor's house 2 times as fast as bailey. the year andrew and bailey worked together, it took them 9 days. how long would it take each to paint the house?

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

Ineed with number 6 , explain how to get 1978

How is this equation completed? i cannot find any examples in the book.