Jan bought 40 shirts for $24. At this rate, how much will it cost to buy 5 shirts

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Ineed in figuring out this problem.

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)