If the third term in an arithmetic sequence is 7 and the common difference is -5, what is the value of the fourth terma.12b.2c.-35d.35

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Can some one me with these questions

What is the domain of the given function? {(3,-2), (6, 1), (-1, 4), (5,9), (-4, 0); o {x | x= -4,-1, 3, 5, 6} o {yl y = -2,0, 1,4,9} o {x|x = -4,-2, -1,0, 1, 3, 4, 5, 6, 9} o y y = 4,-2, -1, 0, 1, 3, 4, 5, 6, 9}