You are welcome and welcome to the forum.

]]>Simplest way is to form the recurrence

with a(0) = 150. Then you just run the recurrence forward for 39 months. Answer is 182.20809 which when rounded is 182.21

From the recurrence you can also get a formula:

Question 3) is done the same way.

]]>2) $100 invested for two years at an interest rate of 2% per quarter. What is the difference between the compound and simple interest earned on this investment? The correct answer is $1.17. How you get this value?

3) What is the future value of £100 invested at 1% per month for five years? The correct answer is $181.67. How do you get that value?

Again, thank you in advance!!!!