A survey of 9,000 customers at Ron’s grocery store showed that 35% (3,150 customers) would buy Grainy-Os cereal. In the first mo
2 answers:
Answer:
The percent error in the survey is 25%
Step-by-step explanation:
- Percent error is the difference between an approximated value and
exact value, divided by the exact value, multiplied by 100%
- Percent of error is a positive value
- error% = [I approximated value - exact value I ÷ exact value] × 100%
- A survey of 9,000 customers at Ron’s grocery store showed that
35% (3,150 customers) would buy Grainy-Os cereal
- In the first month, 4,200 out of the 9,000 customers bought the cereal
∴ The approximated value is 3150
∴ The exact value is 4200
∴ The percent of error = × 100%
∴ The percent of error = I-0.25I × 100% = 25%
* <em>The percent error in the survey is 25%</em>
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The table represents an exponential function given by:
Here we have the table:
x f(x)
0 24
1 12
2 6
3 3
First, notice that for each unit that x increases, the value of f(x) decreases by its half.
This is clearly an exponential equation, whose base must be equal to (1/2).
And because when x = 0, f(0) = 24, we know that the initial value of the function is 24.
Then the exponential function is:
Such that:
Concluding, the table represents an exponential function.
If you want to learn more about exponential functions:
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