Answer:
a. 2x-2
b. Samuel's cousin's age
Explanation:
To write this expression, first figure out what your variable stands for. In this case, we want x to represent Samuel's cousin's age, since this is an unknown value that will help us determine Samuel's age. Next, we can create an expression. 2x-2 tells us that Samuel is two years younger (represented by the -2 part of the expression) than twice his cousin's age (represented by the 2x part of the expression).