Please Help Me i beg

Plz ! define the type of sequence below. -2,0,2,4,6 a. both arithmetic and geometric b. arithmetic c. neither arithmetic nor geometric d. geometric

If you could give answers for the problems in the picture with a mild explanation

The diagram shows the lengths of corresponding sides of similar triangles a'b'c' and abc. which expression gives the perimeter of a'b'c'? a. 4(4 + b + c) b. 2(a + b + c) c. 4(a + b + c) d. 8(a + b + c)