youngwolf

(a) 99 digits

(b) He didn't write down a zero so the probability is 0.

(c) 4950

Sorry, that was wrong.

I'm not sure about the three others but I can do the first one. I'm assuming you meant: Chuck deposits $2000 into a bank account that compounds annually at an interest rate of 6%.  Assuming there are no other transactions, what will the balance be after 4 years, in dollars?

We would take the 2000 dollars and multiply it by 1.06^4. The 1.06 is the interest rate and the power of 4 is the number of years. So our answer would be 200 * 1.06^4

We would add 8 to both sides to reverse the -8 and then we would have 3t = 33.

Next, we divide by 3 on both sides so that we have the answer, t = 11.