Welcome to Westonci.ca, the place where your questions find answers from a community of knowledgeable experts. Our Q&A platform offers a seamless experience for finding reliable answers from experts in various disciplines. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.

A parabola with the equation y = a (b - x) (x - c) is concave up if…
1) both b and c are positive
2) a<0
3) a>0
4) both b and c are negative