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goosey00
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The table shows a purchasing power of a dollar of various years. Use the first and last data points to find an exponential function, and use it to determine when the purchasing power of a dollar will drop to 40 cents. Let t=0 CORRESPOND TO 1983-top being year an bottom being purchasing power
The purchasing power will reach 40 cents in what year??
I get this whole problem all the way up to the part where you have to find the purchasing power is 40 cents. To do this I'm suppose to get it by, graph y=(t) and y=.40 find where they intersect. It says to round to the nearest who number. How do they even intersect? I see them as being parallel.?? Help please!
1983 | 1985 | 1987 | 1989 | 1991 | 1993 | 1995 | |
1.02 | .98 | .95 | .91 | .88 | .85 | .82 |
I get this whole problem all the way up to the part where you have to find the purchasing power is 40 cents. To do this I'm suppose to get it by, graph y=(t) and y=.40 find where they intersect. It says to round to the nearest who number. How do they even intersect? I see them as being parallel.?? Help please!