Doug is 5 years old.
5 + 3 = 8
5 × 8 = 40
You would now have to pay her $9.85
He has -269 dollars available, symbolizing he is in debt.
Evaluating the given sequence, it is evident that the next number is twice the number prior to it. Thus, the given is a geometric sequence with first term (a1) equal to 1 and common ratio of 2. The geometric series may be calculated by the equation,
Sn = a1 x (1 - r^n) / (1 - r)
where Sn is the sum of n terms in this case, n = 11.
Substituting the known values,
<span> Sn = 1 x (1 - 2^11) / (1 - 2) = 2047
</span>
Thus, S11 is 2047.
The first and last represent functions, no function has an input with two separate outputs
