Answer:
Y = x^2/2 - 2x - 2
Step-by-step explanation:
Answer:
1. The cost increases $0.30 each time 1 goldfish is
added.
Answer:
4y^6
Step-by-step explanation:
Take out the constants:
40y^14/10y^8
= 40/10 * y^14 / y^8
= 4 * y^(14-8)
= 4 * y^6
= 4y^6
Hope this helped you :3

The probability of getting 0 heads in 4 tosses (or equivalently, 4 tails) is

.
So the desired probability is
The wording of this question is a bit confusing... You can't write a sequence in sigma notation, but rather a series or sum. I think the question is asking you to write the sum of the sequence,

which would be

in sigma notation.
To do this, notice that the denominator in each term is a power of 2, starting with
and ending with
. So in sigma notation, this series is
