PLS HELP IM STUCK I HAVE KARATE TO WA LP WHATS THE BLANK

Hi my sisters and brothers can tell me the answer because i don’t understand the question

What’s 8y+48 and factor each expression completely

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)