Rite the first ten terms of a sequence whose first term is - 10 and whose common difference is - 2.

-10, - 10-2·1 = - 12, - 10-2·2=-14, - 10-2·3=-16, - 10-2·4 = - 18, - 10-2·5 = - 20,

-10-2·6 = - 22, - 10-2·7 = - 24, - 10-2·8=-26, - 10-2·9=-28

a=-10

d=-2

xn=a+d (n-1)

the first ten terms are

-10, - 12, - 14, - 16, - 18, - 20, - 22, - 24, - 26, - 28