Ask your own question, for FREE!
Mathematics 8 Online
zarkam21:

?

zarkam21:

1 attachment
Vocaloid:

range for this log is all real vallues (no restrictions on y) if log can only take a positive input what does that tell you about x?

zarkam21:

D?

Vocaloid:

x - 2 > 0 x > 2

zarkam21:

A

Vocaloid:

good

zarkam21:

1 attachment
Vocaloid:

afaik the inverse graph is just reflected across the line y = x so

Vocaloid:

|dw:1517286183300:dw|

Vocaloid:

|dw:1517286188592:dw| something like that

zarkam21:

1 attachment
zarkam21:

1 attachment
zarkam21:

so B

Vocaloid:

yeah probably B

zarkam21:

1 attachment
Vocaloid:

good that's what I got too

zarkam21:

1 attachment
zarkam21:

D?

Vocaloid:

200 = 40 * 1.02^x divide both sides by 40 then take log base 1.02 on each side to eliminate that 1.02

zarkam21:

x=50.5

Vocaloid:

keep everything in log form w/o simplifying since the answers are in log form

Vocaloid:

200 = 40 * 1.02^x 5 = 1.02^x log_1.02(5) = x

zarkam21:

so that would be log1=(0.1)

Vocaloid:

where are you getting log1 and 0.1

zarkam21:

log_1.02(5) = x

zarkam21:

don't i have to solve this

zarkam21:

oh nvm that is the simplified version right

Vocaloid:

|dw:1517287492279:dw| change of base lets us replace the logs with lns

zarkam21:

so C

Vocaloid:

yes

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!