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Mathematics
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OpenStudy (majesty69):
Medal!!! HELP PLEASE
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OpenStudy (majesty69):
Given an exponential function for compounding interest, A(x) = P(.77)x, what is the rate of change?
OpenStudy (majesty69):
−0.13%
−13%
0.23%
−23%
OpenStudy (majesty69):
@dan815 @Jamierox4ev3r
OpenStudy (majesty69):
@beelover990
OpenStudy (anonymous):
Can i help u ?
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OpenStudy (majesty69):
yeah
OpenStudy (anonymous):
okies lol XP always glad to help some1 in need what kinda math is this im in 7th so i may not know what this is but ill do my best
OpenStudy (anonymous):
awnser is: -23%
OpenStudy (majesty69):
oh yeah im in 10 it's algebra 2
OpenStudy (majesty69):
@amistre64
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OpenStudy (anonymous):
o well i think i got the right awnser
OpenStudy (majesty69):
Okay thank you!
OpenStudy (anonymous):
yw lol :) always glad to help nbox me if u need more help
OpenStudy (majesty69):
okay
OpenStudy (majesty69):
Amistre help
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OpenStudy (anonymous):
okies would u mind medal me ? o and u dont have to fan me if u dont want to
OpenStudy (anonymous):
thnx alot :)
OpenStudy (amistre64):
change the base part into (1+r) and solve for r
OpenStudy (majesty69):
So (1+r)(0.77)x?
OpenStudy (amistre64):
no like this:
P(1+r)^x = P(.77)^x
this is only true if:
1+r = .77 , r gives us the rate of change.
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OpenStudy (majesty69):
is it -23%?
OpenStudy (amistre64):
r = .77 - 1, so yes r = - .23, or -23%
OpenStudy (majesty69):
Thank you
OpenStudy (amistre64):
youre welcome
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