-48 = 2x - 8y
-24 = x - 4y
4y = x + 24
y = (1/4)x + 6
Slope of the line
1/4
= 9n + 63
generate the first few terms using the recursive equation
f(1) = 72
f(2) = 72 + 9 = 81
f(3) = 81 + 9 = 90
f(4) = 90 + 9 = 99
the sequence is 72, 81, 90, 99, .....
This is an arithmetic sequence whose n th term formula is
=
+ (n - 1 )d
where
is the first term and d the common difference
d = 99 - 90 = 90 - 81 = 81 - 72 = 9 and
= 72
= 72 + 9(n - 1) = 72 + 9n - 9 = 9n + 63 ← explicit formula
Answer:
−
1
+
6
d
,
d
=
2
Step-by-step explanation:
Answer:
I'll say 25 but not too sure!