Answer:
a_n = 2^n + 3
Step-by-step explanation:
The first differences have a geometric progression, so the explicit definition will be an exponential function. (It cannot be modeled by a linear or quadratic function.) The above answer is the only choice that is an exponential function.
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First differences are ...
(7-5=)2, 4, 8, 16
First, convert the distance of a typical marathon to kilometers.
1 mi = 1.609 km
26.2 miles = 42.165 km
Divide this distance by Allan's average speed to get his average time.
42.165 km / 12 km/hr = 3.514 hours
It is 5 because you have to do 12 squared minus 13 squared and then square root that which equals 5
The perimeter is 38.4 inches
You simply divide 678 by 3 and get 226.
