Answer:
$247.37
Step-by-step explanation:
Answer:
The last term is 33.
Step-by-step explanation:
Sn = (n/2)(a1 + L) where a1 = first term and L = the last.
So:
-480 = (20/2) ( -81 + L)
-480 = 10( L - 81)
L- 81 = -480 / 10 = -48
L = -48 + 81
L = 33.
Answer:
6b - 2
Step-by-step explanation:
Product of b and 6 : b*6 = 6b
6b decreased by 2: 6b - 2