The formula for converting a temperature in degrees Celsius into degrees Fahrenheit is F = C + 32. Shirelle, an American visitor to Canada, uses a simpler rule to convert from Celsius to Fahrenheit: Double the Celsius temperature, then add 30. a) Use function notation to write an equation for this rule. Call the function fand let x represent the temperature in degrees Celsius. b) Write f as a rule. Who might use this rule? c) Determine f (x). d) One day, the temperature was 14 .C. Use function notation to express this temperature in degrees Fahrenheit. e) Another day, the temperature was 70 F. Use function notation to express this temperature in degrees Celsius