The range of a human's voice frequency, h (in cycles per second or hertz (hz)), is about 85 + h = 1100 hz. The
range of a human's hearing frequency, H, is about 20 ÷ h ÷ 20,000 hz.
1. The relationship between a human's voice frequency and a bat's voice frequency, b, is h=85+203/22,000(b-10,000). Find the range of a bat's voice frequency.​