determina todas las ecuaciones de la recta que pasa por el punto A(1,2) y lleva la direccion del vector v= (3,4)

What is the difference between regular convex and concave polygons

Is a positive integer raised to a negative power always positive

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?