Evaluate 7 3 4 + ( − 2 1 5 ) x for x = − 10 .
2 answers:
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Step-by-step explanation:
The height of the water in the can is a function of time, because it depends on the time the water flows out each minute.
The height h in cm is a function f of time t in minutes since poking the hole, h= f(t)h=f(t). The expression for f(t) = 20. \frac{2}{3}^{t}f(t)=20.
3
2
t
The values of f -> f(0) = 20f(0)=20; f(1) = \frac{40}{3}f(1)=
3
40
; f(2) = \frac{80}{9}f(2)=
9
80
; f(3) = \frac{160}{27}f(3)=
27
160
The value of f(5) = \frac{640}{243}f(5)=
243
640
The level of water approaches close to the x-axis as time moves on. It does not completely approach zero.
Sorry if wrong answer
