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Mathematics 16 Online
OpenStudy (volleyballlover55):

WHOS GOOD AT PRE-ALGEBRA?

OpenStudy (blazeryder):

Almost everyone here probably.

OpenStudy (volleyballlover55):

ok please help

OpenStudy (volleyballlover55):

Cory's roses grow around 1 inch each month. When he planted them they were 6 inches tall. What is the initial value for the scenario described? 0 1 6 12

OpenStudy (blazeryder):

Sure, what is the question?

OpenStudy (blazeryder):

Well, since he planted them when they were 6 inches tall, I would say the initial value would be 6.

OpenStudy (volleyballlover55):

ok :) next! A used car already has 40,000 miles on its odometer. The average owner will drive 12,000 miles per year. Which function best models the linear relationship? y = 12,000x + 40,000 y = 40,000x + 12,000 y = 52,000x + 12,000 y = 12,000x − 40,000

RhondaSommer (rhondasommer):

assuming you got the car, and were driving according to the average. It would be A. You start off with 40,000 and you are adding 12,000 per year (value x) giving you the total at the end of each year (value y)

OpenStudy (blazeryder):

y=12,000x+40,000

OpenStudy (volleyballlover55):

ok next! Karma baked 48 cookies yesterday. Every hour, she bakes another batch of 12 cookies. What is the rate of change for the scenario described? 4 12 60 48

RhondaSommer (rhondasommer):

i believe 12. \[\frac{12~cookies}{1~hour}\]

OpenStudy (blazeryder):

I would say 12 also

RhondaSommer (rhondasommer):

wait no. \[\frac{48~total}{12~per~hour}=4\]

RhondaSommer (rhondasommer):

IM CONFUSING MYSELF

OpenStudy (volleyballlover55):

lol...

RhondaSommer (rhondasommer):

rate of change... 12 every hour. go with twelve. ignore me and my stupidity on my last answer.

OpenStudy (blazeryder):

I think it is 12. Because it is asking the rate of change. They are just adding the 48 to confuse you.

OpenStudy (volleyballlover55):

ok next.. http://prntscr.com/d4u8a2

OpenStudy (blazeryder):

The graph starts at 2. So the initial value would be 2. The rate of change would be 1. This is because every time you go up 1 in the x-axis you go up one in the y-axis so it would be: \[\frac{ 1 }{ 1}=1\]

OpenStudy (volleyballlover55):

ok :) http://prntscr.com/d4uc46

OpenStudy (blazeryder):

So it looks like every time you increase x by 1 you subtract 2 from y. Knowing this, the initial value would be 12. This is because the initial value would be were x=0. So initial value: 12, rate of change -2

OpenStudy (volleyballlover55):

http://prntscr.com/d4udlz

OpenStudy (blazeryder):

I would say 1 option 1 or 3, but it is most likely the third one.

OpenStudy (volleyballlover55):

http://prntscr.com/d4ueff

OpenStudy (blazeryder):

\[\frac{ 60 }{ 2 }=30\]

OpenStudy (volleyballlover55):

http://prntscr.com/d4ugle

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