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IRISSAK [1]
3 years ago
14

Which of the following options results in a graph that shows exponential growth? f(x) = 0.4(3)x f(x) = 3(0.5)x f(x) = 0.8(0.9)x

f(x) = 0.9(5)−x
Mathematics
2 answers:
andreev551 [17]3 years ago
6 0

Answer:

f(x)=0.4(3)^x ; A

Step-by-step explanation:


Leto [7]3 years ago
4 0
It's important that you use the correct symbol to indicate exponentiation.

<span>f(x) = 0.4(3)x f(x) = 3(0.5)x f(x) = 0.8(0.9)x f(x) = 0.9(5)−x   should be written as:

</span><span>f(x) = 0.4(3)^x f(x) = 3(0.5)^x f(x) = 0.8(0.9)^x f(x) = 0.9(5)−x.  

Please double-check that last problem, as I am unsure of whether you meant 0.9^5 or (0.9)(5).

f(x) = 0.4(3)^x is definitely an exponential function.

Please try again.  Do those problems that you can do an ask questions about the others.


</span>
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What are the roots of the equation x^2+6x-9=0
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Answer:

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Step-by-step explanation:

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x²+6x is the same as x²+2·3·x, in order to make this into the algebraic identity (A+B)²=A²+2AB+B², we must add B², or in this case 3² to both sides. (A is x, B is 3)

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