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algebra II the level of water in a tank is decreasing such that it’s depth , d, can be modeled by d=18(.9)^h, where h represents the percent?
that the water level drops in the span of a single day?
a. 14%
b. 8%
c. 92%
d. 86%
1 Answer
- AlanLv 75 months ago
Assuming you really
meant h represents the number of hours
24 hours = 1 day
so in one day
d = (18)*(0.9)^24 so
d = 18 *(0.079766443 )
so to make it a
percentage
multiply by 100
7.977 percent
Sorry it drops to 8 % percent of its original value
100 - 8 =92% percent drop
which rounds to
c. 92 % drops
which is 8 % of the original value