Question

The cost per minute of a conference phone call, originally $2.80, increased by 20%. What is the new price? MEdal for correct answer!

Answer 1

10% of $2.80 is $.28

20% is double that, .$56

.$2.80
+ .56

$3.36

Answer 2

k can you answer some more

Answer 3

i will try

Answer 4

$3.20, increased by 40%

Answer 5

Okay so 40% of 3.20 is 1.28 so
3.20+1.28=4.48

Answer 6

can you answer a few more

Answer 7

sure :)

Answer 8

ok

Answer 9

Elena buys several shares of stock at $28 per share and sells them at $24.50 per share. What is the percent of decrease in the price of the stock?

Answer 10

A.
11.5%

B.
13.0%

C.
12.0%

D.
12.5%

Answer 11

one second...

Answer 12

k

Answer 13

The stock suffered a 12.5% decrease

Answer 14

ok

Answer 15

so D

Answer 16

next may be a lil tricky

Answer 17

Jack earned $972 in 6 years on an investment at a 3% annual simple interest rate. How much was Jack’s investment?

A.
$174.96

B.
$486

C.
$1944

D.
$5400

Answer 18

$5400

Answer 19

$972/6 = $162/yr
$162/.03 = $5400

Answer 20

ok last one

Answer 21

awesome!

Answer 22

A $6000 investment earns $690 annual simple interest in one year. What is the annual interest rate?

Answer 23

what are your answers? Is it asking for the percentage?

Answer 24

A.
10.5%

B.
11%

C.
11.5%


D.
12%

Answer 25

okay just one second...

Answer 26

C.

Answer 27

11.5%

Answer 28

Thanks You earned a medal + fan

Answer 29

Awesome! Thanks a lot! :)

Answer 30

got to go now cya!

Answer 31

K keep studying hard!