GAMEMASTERX40

Thank you so much, CPhill, for helping me with a step by step solution for this problem! Probability is one of the few subjects that I don't understand in math. I have other similar math problems, but with a different approach. I don't know if I should solve them the same way as this here, so it's something to look at for more teaching.

A = P(1 + r)^t

P = original amount

r = interest rate expressed as a decimal (0.03 in this case)

t = time in years

A = computed amount after t years

The total amount of money after one year of interest: 

A = 100(1 + 0.03)¹

A = 100(1.03)¹

A = 100(1.03)

A = 103 

Answer: $103.00

The total amount of money after six years of interest: 

A = 100(1 + 0.03)⁶

A = 100(1.03)⁶

A = 100(1.19405229653)

A = 119.405229653 

Answer: $119.41

Thanks for the help CPhill! I'm sure that these answers are correct. 

Thank you so much CPhill! I'm so glad to see you again here. It has been so long since I last saw you and I thought something happened because you weren't on the leaderboards. 

Let's see if I can finish this problem. The z-score for Anna is -0.42 and the z-score for Bill is -2.20. They both have a z-score less than 0, but the one that has the more UNUSUAL grade point average is Bill with a z-score furthest from 0. The answer will be C. Bill, because his z-score is further from the mean than Anna’s. Thank you for helping!

Thank you so much for clearing this up for me! I was a bit confused and had to make sure of my work.

I still don't quite understand how to find the measure of angle AOB or PCB... 

Oopsie! Sorry, CPhill I did not see that mistake. I fixed it now and the arc length should be 2π inches. 

Thanks CPhill! This makes more sense now. I thought I had to plug in the coordinates and solve them somehow.