Answer:
Hey there!
We have an=a1(r^n-1), which is the formula for a geometric sequence.
The common ratio is 3, and 2 is the 1st term.
Thus, we have a1=2(3)^(n-1)
Hope this helps :)
Answer:
A
Step-by-step explanation:
(8-3^2)*9-6
8-9*9-6
-1*9-6
-9-6
-15
For this case we have the following equation:

The variables are:
t: time in hours
d (t): distance traveled in miles.
We evaluate the distance traveled after 4 hours.
So we have that for t = 4:
Answer:
d (4) = 68
This means that after 4 hours Joanna cycled for 68 miles total
.2 is 2/10 while .5 is 1/2. 1/2 is much larger than 1/5 (which is 2/10 reduced).
A is correct. ...................................................