The equation (M )/42 = (p – 7)/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale?
Choose the correct choice from the following choices.
A) P	B) P-7	C) (P-7)*2	D) (P-7)62	E) P-5
M/42 =(P-7)/21   M = (P-7)*42/21   =(P-7)*2   (P-7)*2
<result>C</result>
The equation (M )/42 = (p – 7)/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale?