The temperature in Fargo was (-28) degrees on Monday afternoon. By the evening it dropped an additional 15 degrees. What was the temperature in the evening. Please do this quick this is due in 5 minutes btw please show step by step and this is integers word problem

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer