Question

Medal and Fan! Don't want Answers! Just help!

Cami goes scuba diving. She descends 18 feet in 3 minutes. Which expressions represent the average rate at which Cami’s position changes in feet per minute?
Select all that are correct.

A. −(18/3)
B. −18/3<<<
C.−18/−3
D. 6 <<<<<
E.−6

Answer 1

Not really sure about the answers, since they are formatted poorly, but "rate of position change" is basically a fancy way of saying "speed". Do you know the formula for speed?

Answer 2

Yes I know the formula for speed

Answer 3

Also, I updated the answers because I typed them wrong.

Answer 4

So you need to calculate the speed here. You know that she is descending, so her speed must be negative (because she goes "down").

Answer 5

well - your choices cannot be correct since one is positive , and ht eother is negative.

Answer 6

Oh, that's right...

Answer 7

So I'd say C and E, I'm not too sure about A although because the 3 is a positive.

Answer 8

but on the assumption that 'down' is negative (this is only a convention - you COULD choose 'Up' is positive)

then choose all the answers that are negative and equivalent to -18ft/3mins

Answer 9

How do I get the equivalence to -18ft/3mins

Answer 10

c is -18/-3

is this positive or negative?

(and your last question? it's simple division)

Answer 11

C is a positive

Answer 12

So -18 divided by 3 = -6

Answer 13

yes

but 3 of the answers are equivalent to that

Answer 14

So then my answers I have are C and E, correct?

Answer 15

you just told me that C is positive

Answer 16

Oh wait I meant B.

Answer 17

B and E, I got my answer letters mixed up.

Answer 18

B and E seem to have the most sense

Answer 19

3 of the answers are equivalent

Answer 20

3? Hm..

Answer 21

A

Answer 22

I believe I did my math correct

Answer 23

-(18/3) = -1 * (18/3) = -1(6) = -6

you are correct

Answer 24

Thank you!!!