Chapter 2 - Solving Equations - 2-5 Literal Equations and Formulas - Practice and Problem-Solving Exercises - Page 114: 53

92 chirps

Because the scenario is occurring at 60 degrees, we plug 60 in for F. This gives us: $60=n/4 +37 \\\\ 23=n/4 \\\\ n=92$ We first subtract both sides by 37. Then, we isolate n by multiplying both sides by 4. This gives us an answer of 92 chirps in a minute.