The variable x represents the number of angelfish Carlos bought and the variable y represents the number of parrotfish he bought
.
Carlos bought 405 tropical fish for a museum display. He bought 8 times as many parrotfish as angelfish.
How many of each type of fish did he buy?
Which system of equations models this problem?
{x+y=405
y=8x
{x−y=405
y=8x
{x+4y=8
y=405x
{x+y=8
y=405x
Carlos bought 405 tropical fish for a museum display. He bought 8 times as many parrotfish as angelfish.
How many of each type of fish did he buy?
Which system of equations models this problem?
{x+y=405
y=8x
{x−y=405
y=8x
{x+4y=8
y=405x
{x+y=8
y=405x
2 answers:
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Answer:
The exponential model is .
Step-by-step explanation:
The exponential model can be modelled by the following mathematical expression:
(1)
Where:
- Independent variable.
- Dependent variable.
- Coefficients.
If we know that and
, then we get the following system of equations:
(2)
(3)
If we divide (3) by (2), we calculate the value of :
And by (2), we determine the value of :
The exponential model is .