Answer:
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Step-by-step explanation:
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Answer:
the length would be the same as the other side so the length would be 19.5 and the width 15
The change is decay and the percentage rate of decrease will be 95%.
An exponential function is a function where a number is raised to the variable i.e. base is raised to the exponent times.
Here given the exponential function is y= 4300(0.042)ˣ
Now we have to identify if the change in exponential function represents growth or decay, and have to determine the percentage rate of increase or decrease.
Here in the exponential function, the base is less than 1 so the change is decay.
The equation represents exponential decay because the decay factor is lesser than 1.
The general form of the exponential equation is:
y(x)= a(1-r)ˣ such that r is the decay.
equating with the equation
y= 4300(0.042)ˣ
a= 4300
and 1-r=0.042
⇒r= 1-0.042
⇒r= 0.958
the perecentage of decay will be r*100= 0.958*100= 95%
Therefore the change is decay and the percentage rate of decrease will be 95%.
Learn more about exponential function
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Answer:
(1,0) and (-3,0)
Step-by-step explanation:
It is because at those points on the graph is where the graphed function crossed the x-axis.
The amount of money in the account if compounded quarterly at 6% after 9 years is $22,217
<h3>Compound interest</h3>
- Principal, P = $13,000
- Time, t = 9 years
- Interest rate, r = 6% = 0.06
- Number of periods, n = 4
A = P(1 + r/n)^nt
= 13,000(1 + 0.06/4)^4×9
= 13,000(1 + 0.015)^36
= 13,000(1.015)^36
= 13000(1.709)
= $22,217
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