True or False: The distance between 19 and –15 on a number line is 4

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Which compound inequality could be represented by the graph?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,