How do you put a picture on as far as the questions?

What expression is equivalent to 1/2(2+3x-6)

The trigonometric ratios sine and secant are reciprocals of each other

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)