Exercise 7.x1: Write a procedure that takes two arguments, a and n, and generates a list of n consecutive even integers, starting with a. You may assume that a is an even integer and that n is a nonnegative integer.
Do exercise 7.8(a) on page 174.
Do exercise 7.9(a) on pages 174-175.
Do exercise 7.41 on page 205.
Do exercise 7.42 on page 205.