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clairajogriggsk
12.01.2020 •
Mathematics
Determine whether the function represents exponential growth or decay identify the percent rate of change
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Ответ:
now, the + is growth, and - is decay
well, let's see hmm "something" is increasing at a rate of say hmm 25%, r = 25% or 25/100 or 0.25
now, if we plug that in the equation, the amount is increasing the rate is positive, so we get A = P(1+0.25)ᵗ or A = P(1.25)ᵗ
now, notice, the value in the parentheses, is "greater than 1", because the 0.25 got added
now, let's say something decreases by 25%, so we use a negative rate, thus A = P(1 - 0.25)ᵗ or A = P(0.75)ᵗ
notice again, the value inside the parentheses, is "less than 1"
anyhow, that's the tell-tale part of an exponential function
Ответ:
On average she looses 1.33 pounds per week
Step-by-step explanation:
3/4=0.75
1.25+2+0.75=4 -> total weight loss
There are 3 weeks in total.
4/3=1.33