$55+$40=95 for 1 hr
95x2=$190
so she came for 2 hrs
Answer:
The expected value of this raffle if you buy 1 ticket is $0.41.
Step-by-step explanation:
The expected value of the raffle if we buy one ticket is the sum of the prizes multiplied by each of its probabilities.
This can be written as:

For example, the first prize is $800 and we have only 1 prize, that divided by the number of tickets gives us a probability of 1/5000.
If we do this with all the prizes, we can calculate the expected value of a ticket.

Use combine like terms the answer is 7r^2-r-1
It will be around 1.6metres
hope it helps
Answer:
1000 + 40 + 7
Step-by-step explanation:
MULTIPLY:
349 times 3 = 1,047
EXPANDED FORM:
1000 + 40 + 7