Question

A car traveling at 25mi/h accelerates to 48mi/h over the first 5 seconds. It maintains that speed for the next 5 seconds, and then slows to a stop during the next 5 seconds

Answer 1

@KamiBug

Answer 2

@TheCookie36

Answer 3

Your graph will start at 25 mph. Then accelerate to 48 mph for 5 seconds. So that part of the graph with have a positive slope. Then it holds 48 mph for 5 seconds so the graph zero slope. Then it slows to a stop in the next 5 seconds. So it will have negative slope.

Answer 4

The car comes to a stop at the 15 second mark. Can you tell me which graph shows the car coming to a stop at the 15 second mark?

Answer 5

It's not graph 1 because it shows a speed of nearly 50 mph at the 15 second mark.
It's also not graph 4 because it shows a speed of 48 mph at the 15 second mark.

Answer 6

So were left with graph 2 and 3. Which one shows an acceleration(positive slope) from 25 to 48?

Answer 7

@Brian42 I think it would be the first or last graph

Answer 8

A positive slope slants upward and a negative slope slants downard. No, it can't be the first or last graph because the car has come to a stop at the 15 second mark. At 15 seconds the car is going 0 mph. Take a look at graph 1 and 4. Is the car going 0 mph?

Answer 9

@Brian42 oh I meant the third graph not the forth

Answer 10

Both the 2nd and 3rd graph come to a stop at the 15 second mark. Which graph shows a positive slope from 25 mph to 48 mph. An upward slope.

Answer 11

@Brian42 the 2nd graph

Answer 12

Yes, good

Answer 13

@Brian42 can you help with more your really good

Answer 14

I can try

Answer 15

@Brian42 ok

$300 at 5% annual interest for 7 years

find the simple interest rate
$214.29
$11.67
$420.00
$105.00

I think its b or c but im not sure

Answer 16

Do you know the simple interest formula? :)

Answer 17

I'm gonna let Kami help you with this one because I honestly don't remember how to calculate the annual interest.

Answer 18

@KamiBug ok kami no I forgot the formula

Answer 19

\[A = P(1+rt)\]
P = principal ($300)
r = rate (5% = 0.5)
t = time in years (7)

Answer 20

ok now what do I do @KamiBug

Answer 21

Plug the numbers into the formula and simplify to find the amount. :)

Answer 22

105.00

Answer 23

Oh snap I just realized I made a mistake... 5% = 0.05 not 0.5 XD Sorry about that.

Answer 24

@KamiBug lol ok then is it the same answer or no

Answer 25

@KamiBug ok then what am I doing wrong

Answer 26

Wait... This is a different formula lol my bad.
You're correct you just do P * r * t = 105

Answer 27

@KamiBug ok I thought so want to help with another

Answer 28

Sure

Answer 29

@KamiBug ok ill close this question and tag you in a new one

Answer 30

Ok :)