5 Use the formula C = (F-32) for conversion between Fahrenheit and Celsius to convert each temperature. 9 a. 69F to Celsius b. -20F to Celsius c. 45C to Fahrenheit a. 69F =C (Type an integer or decimal rounded to the nearest tenth as needed.) b. -20F =C (Type an integer or decimal rounded to the nearest tenth as needed.) c. 45C = F (Type an integer or decimal rounded to the nearest tenth as needed.)