Originally Posted by Bostonian
I won't say she can do algebra until she can solve

2*n - 3 = 5

That's very similar to the questions on the end-of-5th test in our district, where it's not called Algebra until 8th or 9th grade. The exact question uses a table of "n"s paired with outputs, and asks for the formula that fits the table, where 2*n +1 is the proper one.