Answer:
31
Step-by-step explanation:
From the expression
F(n + 1) = F(n) -3
>> f(n+1)-f(n) = -3
f(n) = f(n+1) + 3
f(4)- f(3) = -3
f(4) + 3 = f(3)
22 + 3 = 25 = f(3)
Similarly ; f(2) = f(3) + 3 = 25 + 3 = 28
f(1)= f(2) + 3 = 28 + 3 = 31
Answer:
an = 5·2^(n-1)
Step-by-step explanation:
The explicit formula for a geometric sequence with first term a1 and common ratio r is ...
an = a1·r^(n-1)
Your sequence has a1=5 and r=2, so the explicit formula is ...
an = 5·2^(n-1)
Answer:
2 : 1
Step-by-step explanation:
3x2=6, 6÷1/2=3 that is how I understand it to be. I'm not sure if you need it but x=11
Answer:
Step-by-step explanation:
We are given: 
The volume will be calculated via the integral as follows,
You have to add the opposite of the number on the left of the x to start, so it would be -3 = -3, then you solve
