Answer: Let's use x to represent the number of months Tony took classes last year. Then, this year he plans to take 2 more months of classes, so he will take x + 2 months of classes this year.
The cost of classes per month is $29.50, so Tony's total karate expenses last year were:
29.50 * x
And his total karate expenses this year will be:
29.50 * (x + 2)
To find how this will affect his expenses, we can subtract the total expenses from last year from the total expenses for this year:
29.50 * (x + 2) - 29.50 * x
Simplifying this expression gives:
29.50x + 59 - 29.50x = 59
So the effect of taking 2 more months of classes is an increase of $59 in Tony's karate expenses.
The equation that shows the relationship between the number of months Tony takes classes and his karate expenses is:
Total expenses = 29.50 * (number of months)
where "number of months" is the total number of months Tony takes classes, including both this year and last year.
Explanation: