If y varies directly as the x squaredand y = 200 when x = 5, what is the value of y when x = -3? a. Negative 72 b. 120 c. 72 d. Negative 120

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

In triangle abc, angle c is a right angle. find the value of the trig function indicated. find tan a if c = 17 and a = 8