Question

how do I do this one

Answer 1

number one

Answer 2

@supie

Answer 3

What are the instructions?

Answer 4

idk

Answer 5

Are we calculating simple interest? mhmm

Answer 6

yes for the first one

Answer 7

Can you guys subscribe to my yt
so i can pay of my collage taxes

Answer 8

\(\color{#0cbb34}{\text{Originally Posted by}}\) @kylenbrownyt
Can you guys subscribe to my yt
so i can pay of my collage taxes
\(\color{#0cbb34}{\text{End of Quote}}\)
stop you keep bugging me about it just shut up about it

Answer 9

ok

Answer 10

A = P (1 + rt)

A = final amount including interest
P = principle (this is the starting amount basically the numbers in your first column)
r = rate
t = time in years

Answer 11

a=4000(1+7.5*2)

Answer 12

Yes!! Now first change 7.5% to 7.5/100 or 0.075

and then multiply by 2

Answer 13

.15

Answer 14

@az

Answer 15

Good! Now we have
a = 4000 * (1 + 0.15)

what is 1 + 0.15
and then multiply that by 4000

Answer 16

4600

Answer 17

Now that's the final amount with interest. It's basically how much we started with + interest.

Your last column wants just the interest so to do that we just have to subtract the initial amount
Final amount - initial amount = interest

Does that make sense?

So 4600 was your A or final amount
and we said 4000 was the initial amount

Answer 18

how do you find anual rate

Answer 19

so you finished the first question? and we're moving on to #3 now?

Answer 20

yes

Answer 21

okay so remember the formula

A = P * (1 + rt)

so for #3

we know P = 6000

and we know t = 18 MONTHS but we need this as years.
18 months is 1 year and 6 months
and 6 months is the same thing as half a year so
18 months = 1.5 years

so t = 1.5 yrs

now we also know A which is the final amount
remember what I just told you?
The final amount is basically our P (the initial amount) + the interest which is given to you in the last column as 1125

so
A = 6000 + 1125 = ?

Answer 22

7125

Answer 23

so that's A

so now we have

7125 = 6000 * (1 + r*1.5)

so first divide 6000 on both sides

7125 / 6000 =

Answer 24

1.1875

Answer 25

now we have

1.1875 = 1 + 1.5r

subtract 1 on both sides, what is

1.1875 - 1 =

Answer 26

.1875

Answer 27

now divide by 1.5 and that will be your rate as a decimal

to get the rate as a percentage, you just multiply by 100

Answer 28

I got 12.5

Answer 29

don't forget the % sign

it's 12.5% and that's correct :)