Answer:
n=12
Step-by-step explanation:
1/4n+7=10
n+28=40
s10 = -20
n = 10
an = -20
solution
s10 = n\2 [a+(n-1)d]
-20 = 10a2[a+(10-1)4]
-4 = a +36
a1 = -40
Hope it helps.
Hope it helps
B. unit of account
Accounts are kept in terms of units of account. Money serves as the unit of account when accounts are kept in terms of money.
20:4
got it for u