justinerodriguz2878
11.03.2020 •
Mathematics
The cost of a gallon of gas increases from $1.46 to $3.53 over a period of 10 years. Use the formula r= F/P^1/n -1 to find the annual inflation rate r to the nearest tenth of a percent, where n is the number of years during which the value increases from P to F . The rate is about ___ %.
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Ответ:
- 3 ( 2x+1 ) 20
8x+5
8x+5×20 -3 ( 2×12.5+1 )
8×=100 -3 ( 25+1 )
100÷8= 12.5 -3 ( 26 )
×= 12.5
-3 ( 26 )
-3×2 + -3×6 = -6+ -18 = -24
-24