Apply successive transformations in their stated order

(a) $y=x^2-1$ is translated 3 units in the positive x-direction, stretched by factor 2 parallel to y, then translated 2 units in the negative y-direction. Find the new equation as $y=f(x)$.3 marks

(b) Three successive transformations change $y=h(x)$ to $y=h(1-2x)$. Describe them.3 marks