For a recently released movie, the function y=119.67(0.61)to the x power models the revenue earned, y, in millions of dollars each week,x

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For a recently released movie, the function y=119.67(0.61)to the x power models the revenue earned, y, in millions of dollars each week,x, for several weeks after its release. Based on the equation, how much more money, in millions of dollars, was earned in revenue for week 3 than for week 5?

Answer:

I got your question. But the number seems to be high for calculation.
The function Y actually solves down to 73.
For 3 weeks collection, we get 73^3
Hence for third week, we get it as, (73^3-73^2)=73^272
Similarly, we get for 5th week as (73^4
72).
Obviously, we get more collection in 5th week compared to 3rd week.
the difference b/w them is more than 2 billion.