Do 14,18, 18 form a triangle

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to 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

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left