The formula to find any term of an an arithmetic sequence is given by
=
=(n-1)d,
where we have first term
=8,
and d which is the common difference , and n is the term we need to find (in our case is 20)
the difference d=3, as you see each number is the previous minus 3
for S20=8+(20-1)*(-3)=8+(19)*(-3)=8-57=-49
S20=-49, this the 20th term
Answer:
f(x)= -54x -4
g(x)= -3x -2
f+g)( x)= -54x -4 -3x -2 = -57x -6
Answer:
<h2>
<em><u>B)</u></em></h2>
Step-by-step explanation:
$96(2 payments) = $192
$192/(12 months) = $16 per month (she should set aside)