Your students will work every single one of these 24 limits problems because of the circuit format. To advance in the circuit, students must find their answers -- this element of self-check is essential! My students don't get up when the bell rings and they are working on a circuit! The problems are progressive in nature and contain a little bit of everything, including trig and transcendentals.
No answer key is included as the answers are part of the circuit. This can be used as guided notes, independent practice, cooperative work, or even a test!