This is an arithmetic series with first term a1 = 3 and common difference = 3
Sum after 365 days = (365/2)[ 2*3 + (365-1)*3]
= 200,385 pennies = $2003.85 Answer
They are expected to win back on average 50 cents back, which is a bad investment.
To find the probability of both of these occurring, you will multiply the probability of choosing a blue marble by the probability of choosing a purple marble (with no replacement after the first one).
Probability of choosing a blue marble: 17/120
Probability of choosing a purple marble: 18/119
17/120 x 18/119 = 3/140
You will have a 3/140 chance of both of these occurring.
Answer: 7 candy bars
Step-by-step explanation:
First we need to subtract the cost of the magazine from the total cost
$34-$6=$28
Now the $28 that remains is the cost of all the candy bars, so if we divide by the price, we will get the amount.
$28/$4=7 candy bars