Answer:
36
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
There are about 110,000 days in 300 years, so the expected number of failures is about 10/11 ≈ 1.
_____
This assumes the launch conditions are identical for each of the launches, or that whatever variation there might be has no effect on the probability. These are bad assumptions.

Let

be the root with the positive square root and

the root with the negative square root. Then

The simplest quadratic with these roots can be written as
Answer:
After 6 weeks Rosa has saved $490.
Step-by-step explanation:
1. You have the function given in the problem above, where
os the number of weeks:

2. Therefore, to solve this problem you only need to substitute 6 weeks (or
) into the given function, as following:

3. The result is $490.