Question

Help pls!

Answer 1

\[A=pe^{rt}\]

Answer 2

Is that formula familiar?

Answer 3

so 1679.09=. I dont know where to put the rest

Answer 4

r=rate, t=time{in years}, p=principle, "e" is just a number in the calculator and the "A" is the amount you end up with when you calculate it all.

Answer 5

Your rate is 4% which translates to: .04. Then your principle is: $1679.09, and your time is: 2(2 years).

Answer 6

oh okay what ?=1679.09^4(2)?

Answer 7

\[1679.09\times e^{.04\times2}\]

Answer 8

make sense?

Answer 9

whats e?

Answer 10

$$\large{
Balance = Principal \times e^{\color{blue}{rate \times years}}\\
\cfrac{Balance }{e^{\color{blue}{rate \times years}}}= Principal
}
$$

Answer 11

I am asuming you are allowed to use at least a scientific calculator?

Answer 12

yes

Answer 13

And I am sorry you are right I just read your question again they are looking for the principle investment so your formula is correct mine is wrong. They are essentially the same just the $1679.09 is the "A" in my formula.

Answer 14

so....

Answer 15

1679.09= e^4(2)?

Answer 16

\[1679.0=p \times e^{.04\times2}\]

Answer 17

okay so how do i fine P and e

Answer 18

\[\frac{ 1679.09 }{ e^{.04 \times 2 }}=p\]

Answer 19

e is the "euler constant", so that's a FIXED value, and a long one, it'd be in your calculator :)

Answer 20

Now do you have your calculator in front of you?

Answer 21

okay yes

Answer 22

i found an e on the calculator

Answer 23

There is a button on there somewhere that says "e" it may not be directly on a key, it may be above it meaning that you have to push shift first do you see it

Answer 24

Ok then all you have to do is put all that into your calculatorr and it sill give you an answer round as it indicates and you should be good to go. "e" is just a number, something like pi that we use a symbol to represent.

Answer 25

but the number is 0.58? that doesnt make sence

Answer 26

I got 1550 as a result. double check it with your calculator

Answer 27

so 1550x4% =62 which 1612

Answer 28

why did you do that?

Answer 29

if \[A=pe^{rt}\]

Answer 30

Then if you decide that p=1550, you must plug that back into the formula with all the other info you have to check , so try using the 1550 with e^.08 and see what you get?

Answer 31

okay let me try that

Answer 32

A is 1679.09= 1550^4(2)?

Answer 33

no the rate is a percent.

Answer 34

t use a percent in this case you have to turn it into a decimal.

Answer 35

4%=.04

Answer 36

0.04

Answer 37

okay

Answer 38

did that work out?

Answer 39

well i put in my calculator 1550^.04(2)=1.799

Answer 40

1550xe^.04(2)=1679.09 you forgot to raise "e" to the power

Answer 41

nvrm i forgot the e

Answer 42

yeah thanks

Answer 43

your welcome