What is the answer to this ? You have to simplify 4(- 3n - 7)

Need plz been trying to do it for a long time and still haven’t succeeded

Three students each examine the system of linear equations shown. 8x + 4y = 16 8x + 2y = 8 caleb says there is exactly one solution. jeremy says there is no solution. kim says there are infinitely many solutions. which student is correct? provide mathematical reasoning to support your answer. answer in complete sentences. : d

Find the measure of anglec in the following triangle