Dr. Lin is working a 12-hour shift at the hospital. She has already worked 9 3
4
hours. After taking a
1
4
-hour break, Dr. Lin splits her remaining time equally among her last 4 patients. How much time does Dr. Lin spend with each patient?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33