Which types of problems might appear in the college-level math section of
accuplacer?

Problems that might appear in the college-level math section of  ACCUPLACER:

Accuplacer in various stages of the school and college has its own syllabus which is decided by keeping in mind about the mental capacity and workload of the students concerned.

Similarly, the Accuplacer at the college level would have questions that involve Functions and Coordinate Geometry. Functions, here refers to the mathematical functions and Coordinate Geometry refers to the geometrical perspective involving the various coordinates.  

Thus, we can conclude that Accuplacer at college level consists of Functions and Coordinate Geometry.