I don't even know where to begin on this question! It's grade 12 calculus. We just finished learning the chain rule.

25. The graph of y=(ax+b)^c, where a,b,c are real constants, has a tangent line at (3,27) defined by y=18x-135. The graph also has a point of inflection, (-1.5, 0). Determine a, b, c.

At the very least, help me to get started by solving for one of these variables!

Please and thank you.

Mike