_josalynn
Solve 2^x + 3 = 7
x ≈ –5.19
x ≈ 0.94
x ≈ –0.19
x ≈ 2.81
Solve 5^x + 5 = 9^x
x ≈ –3.63
x ≈ –0.28
x ≈ 0.07
x ≈ 13.69
Solve 3^x – 4 = 7^x + 9
x ≈ –25.86
x ≈ –2.59
x ≈ –0.39
x ≈ –0.04
Solve 11.32^x – 1 = 15.7
x ≈ 1.12
x ≈ 0.57
x ≈ 0.94
x ≈ 1.07
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precal
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I can help you do one of these, they are all done in the same fashion
precal
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|dw:1359308368840:dw|
_josalynn
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these are logarithmic functions with unequal bases..
precal
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seems like your choices are incorrect or you posted the wrong problem
precal
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|dw:1359308477686:dw|is this your problem?
_josalynn
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yes.
precal
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then your post is incorrect
precal
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|dw:1359308523605:dw|
_josalynn
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i put the ^ representing it was an exponent.
precal
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|dw:1359308551226:dw|
precal
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|dw:1359308581180:dw|
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|dw:1359308604405:dw|
precal
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big difference, btw I am done with the problem
just put it in your calculator so you can choose the correct solution
precal
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|dw:1359308663511:dw|
precal
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the decimal answer is what is known as an approximate solution
precal
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the others are done in the same format
_josalynn
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so it would be -0.19?
precal
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-.1926450779
_josalynn
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okay, thanks so much.
precal
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yw
_josalynn
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for the second problem 5^x+5=9^x i got a little confused, do you think you can help?
_josalynn
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i did every step you did but the extra x threw me of a little bit.
precal
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|dw:1359309478846:dw|
precal
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which one is it?
_josalynn
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the second one.
precal
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|dw:1359309573523:dw|
_josalynn
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ooh!! i forgot to distribute!
precal
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|dw:1359309640158:dw|
_josalynn
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when i did the math, none of the answer choices were listed. i got -5.757579742
precal
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you need to put ( ) in the correct place in your calculator
precal
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|dw:1359310047290:dw|
precal
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if you are using a TI graphing calculator then you will need more ( )|dw:1359310083503:dw|
_josalynn
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got it! thanks alot. im going to try to do the next few problems by myself.
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yw