a) Set up the variables: Let represent the first number, Then will represent the

Step-by-step explanation:

Let x be the first number, then x + 1 is the second, then x + 2 is the third number.

The required equation to show the sum is:

Solve for x:

The numbers are 33, 34 and 35

58 stamps is the number she gets each week. So if she went for one week, 58*1=58. 58*2=116 and so on. Because we don't know the exact number of weeks, we say 58w or 58*w because you multiply however many number of weeks she collects.