1) deangelo deposited $9350 into a savings account for which interest is compounded daily at a rate of 2.58% how much interest will he earn after 12 years?
a)$2821.97
b)$3392.79
c)$244.36
d)$252.50

2) colby deposited money into a savings account that pays a simple annual interest rate of 1.8% he earned $334.80 in interest after 6 years. how much did he deposit?
a)$18,600,00
b)$11,160.00
c)$3100.00
d)$2008.80

3) whitney deposited money into an account in which interest is compounded quarterly at a rate of 2.9% she made no other deposite or withdrawals and the total amount in her account after 12 years was $10,891.31 how much did she deposit ?
a)$7700
b)$8650
c)$9700
d)$10,580

4) the graph shows the total amounts in two accounts with the same principal and annual interest rate. after 40 years, how much did the account with compound interest earn than the account with simple interest?
a) about $525
b) about $500
c) about $300
d) about $225

Part 1) Option B.

Part 2) Option C.

Part 3) Option A.  

Part 4) Option D. About

Step-by-step explanation:

Part 1) we know that

The compound interest formula is equal to  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

substitute in the formula above  

Find the interest

Part 2) we know that

The simple interest formula is equal to

where

I is the interest amount  

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

substitute in the formula above

Part 3) we know that    

The compound interest formula is equal to  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

substitute in the formula above  

Part 4)

The account with compound interest earn about

The account with simple interest earn about

see the attached figure

The difference is equal to

therefore

the answer is about

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.