Practice Test 10

In the surface area formula for a cylinder, one part can be written as $$2\pi r(r+h).$$ Which describes the structure of $2\pi r(r+h)$? (View $(r+h)$ as a single unit.)

Which describes the structure of $$4\left(1-\frac{x}{3}\right)^5?$$ (Treat $\left(1-\frac{x}{3}\right)$ as one chunk.)​