Change the order or grouping to find sum, explain how you used properties to find sum. 63+86+77

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

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 y-intercept of the line given by the equation