What is the rate on an investment that doubles $5051 in 9 years? assume interest is compounded quarterly.

The rate at which the investment gets double is 7.776

Step-by-step explanation:

Given as :

The principal investment = $ 5051

The time period of investment = 9 years

Let The rate of interest = R % compounded quarterly

The Amount gets double

So,  From Compounded method

Amount = Principal ×

Or, 2 × P = P  × ( 1 +

Or, 2 =  ( 1 +

Or, = 1 +

or, 1.01944 - 1 =  

or, 0.01944 =  

∴ R = 0.01944 × 400 = 7.776

Hence The rate at which the investment gets double is 7.776   Answer

15 batches are the most you can make

step-by-step explanation:

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!