What is the x-coordinate of the vertex of the parabola whose equation is y = 3x2 + 12x + 5?

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

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

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days