Sentences to Quadratic Equations

[Otis]

At this point, I'd accept either.

 

[Otis]

At the end of the lesson, you (student) should be able to: Solve problems involving quadratic equations.

I wish they'd written "Solve similar problems".

The sections with instruction to use mental calculations suggest they've already covered beginning algebra. Maybe the OP is trying to do both courses at once.

?