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anonymous
 one year ago
A block of ice weighing 100 kilograms begins to melt. Each hour the block loses 5%, of its weight. Let's let W be the weight in kilograms of the block of ice after melting for t hours.
Is W a linear function or an exponential function?
This function is exponential because W decreases by 9.75, as t increases from t=0 to t=2 .
This function is linear because W decreases by 5 as t increases from t=0 to t=1.
This function is linear because W is multiplied by a factor of 5% each time t increases by 1.
This function is exponential because W is multiplied by a factor of 0.95 each time t
anonymous
 one year ago
A block of ice weighing 100 kilograms begins to melt. Each hour the block loses 5%, of its weight. Let's let W be the weight in kilograms of the block of ice after melting for t hours. Is W a linear function or an exponential function? This function is exponential because W decreases by 9.75, as t increases from t=0 to t=2 . This function is linear because W decreases by 5 as t increases from t=0 to t=1. This function is linear because W is multiplied by a factor of 5% each time t increases by 1. This function is exponential because W is multiplied by a factor of 0.95 each time t

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The question is asking you to evaluate if the rate of change is in fixed proportion to the amount or just in a fixed proportion to x. If linear then you wont get a rate of change % in relation to the current amount, but you will see a fixed change for each step of x. If exponential you wont see any change in the rate of change relative to the amount it will stay at a fixed % for each step of x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the thing to ask is.. "is the % of change fixed or changing for each step of x"? If fixed then exponential.. f[x+1]/f[x] is going to be constant. Or "is the function just changing by the same amount for each step of x " so f[x+1]f[x] is going to be constant. Then the function is linear.
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