Pls answer this question and I will mark brainliest. Pls no absurd answers. Thanks in advance!!!

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove