Arithmetic Sequence:
12, 8, 4, 0, -4…
a) Find b) Find
a)
8 – 12 = -4
4 – 8 = -4
0 – 4 = -4
-4 – 0 = -4
d=-4
=+(n – 1)(d)
=12 + (50 – 1)(-4)
=12 + 49(-4)
=12 + (-196)
=-184
b)
)
(12 + (-184))
= 25(12 + (-184))
= 25(-172)
= -4,300