SOLUTION: from 1990 to 1998 the manufacturer's shipments for audio cassettes A (in millions) and compact discs C (in millions) can be modeled by the equations:
A=-31.8t+322
c=428.8t+110
w
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-> SOLUTION: from 1990 to 1998 the manufacturer's shipments for audio cassettes A (in millions) and compact discs C (in millions) can be modeled by the equations:
A=-31.8t+322
c=428.8t+110
w
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Question 994020: from 1990 to 1998 the manufacturer's shipments for audio cassettes A (in millions) and compact discs C (in millions) can be modeled by the equations:
A=-31.8t+322
c=428.8t+110
where t is the number of years since 1990. During what year did the number of compact discs shipped surpass the number of audio cassettes shipped?
You can put this solution on YOUR website! The point where the two graphs meet is the year, if one looks at t.
-31.8t +322=428.8t + 110
460.6 t= 212
t=0.460. This would be in mid-1990. I wonder if the numbers were copied correctly, but with those equations, that is the value.
