Acar is moving at a fixed speed. the distance d that the car covers is then directly proportional to the time t it moves. find the speed of the car. write a formula that connects d and t. what is the coefficient of variation k equal to? if d=20 miles when t=15 minutes, write a proportion to find d for t=20 minutes

The equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true? a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of 5/9 degree celsius. a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit. a temperature increase of 5/9 degree fahrenheit is equivalent to a temperature increase of 1 degree celsius. a) i only b) ii only c) iii only d) i and ii only