Algebra-1

To find out how many classes were attended for the total cost to be the same under both membership plans, we can set up an equation.

Let n be the number of classes attended.

Given:

For plan A, there's a $49.90 sign-up fee plus $5 per class, so the total cost is 49.90 + 5n dollars.

For plan B, there's a $34.90 sign-up fee plus $7.50 per class, so the total cost is 34.90 + 7.50n dollars.

We can set up the equation:

49.90 + 5n = 34.90 + 7.50n

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