April 19 Compounded Interest

What does the n stand for in this formula?

• Initial amount

• Final amount

• Rate

• Time

• The number of times compounded per year

What does the r stand for in this formula?

• Initial amount

• Final amount

• Rate

• Time

• The number of times compounded per year

What does the P stand for in this formula?

• Initial amount

• Final amount

• Rate

• Time

• The number of times compounded per year

What is the correct definition of interest?

• money paid to you by a bank for the money you have in a bank account

• put into a bank account

• to borrow something

Emily's parents put $1,500 in her bank account for college tuition. At an interest rate of 8.25% compounded semi-annually, what will be the balance after 3 years?

• $2,273.50

• $1,514.08

• $2,040.23

• $1,911.70

Bruno was given $2000 when he turned 3 years old.  His parents invested it at a 2% interest rate compounded annually.  No deposits or withdrawls were made.  Which expression can be used to determine how much money Bruno had in the account when he turned 16? 

• 2000(1+0.02)¹³
• 2000(1-0.02)¹³
• 2000(1+0.02)¹⁶
• 2000(1-0.02)¹⁶

Monthly means how many times a year?

• 4 
• 12
• 52
• 365

Principal: $5000
Interest Rate: 3.75%
Time: 25 years
Compounded Monthly
State the future account balance.

• $12712.31
• $12,749.30
• $12,657.59
• $12550.84

Riley invested $1,000 in savings bonds. If the bonds earn 6.75% interest compounded semi-annually, how much total will Riley earn in 15 years?

• $1,584.62
• $2,651.39
• $2,706.86
• $1,825.10

Change 6.75% to a decimal.

• 67.5
• .675
• 675
• .0675