Will mark brainliest and ! !

if two angles are congruent, then the angles are vertical angles.
which diagram provides a counterexample for the statement?

a) a

b) b

c) c

d) d

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Find the cosine function that is represented in the graph.