6th grade math I mark as brainliest
2 answers:
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Answer:
$7 200
Step-by-step explanation:
Amount of money paid for charity = × $22 000
= $2 200
Remaining money left for children = $22 000 - $2 200 - $10 800
= $9000
Let the amount of money her son receives be x and the amount her daughter gets be 4x.
Son's $ + Daughter's $ = $9000
x + 4x = 9000
5x = 9000
Amount of money her daughter gets (4x) = × 9000
= $7 200
Answer:
A -
B - Graph given below
C - Number of trouts in 5th week are 607.2
D - Population of trouts will exceed 500 on the 5th week.
Step-by-step explanation:
We are given that,
The number of trout increases by a factor of 1.5 each week and the initial population of the trout is observed to be 80.
Part A: So, the explicit formula representing the situation is,
, where f(t) represents the population of trouts after 't' weeks.
Part B: The graph of the function can be seen below.
It can be seen that the function is an exponential function.
Part C: It is required to find the number of trouts in the 5th week.
So, we have,
i.e.
i.e. f(5) = 607.2
Thus, the number of trouts in 5th week are 607.2
Part D: We are given that the trout population exceeds 500.
It is required to find the week in which this happens.
So, we have,
i.e.
i.e.
i.e.
i.e.
i.e.
i.e. t > 4.5
As, t represents the number of weeks. So, to nearest whole, t = 5.
Thus, the population of trouts will exceed 500 on the 5th week.
