## Algebra 1: Common Core (15th Edition)

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.