Graph the linear equation. Y=-1/5x+3
1 answer:
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The exponential function is given by
An exponential function is in the form:
Where a is the initial value of y and b is the multiplier factor
Let y represent the population after t years.
Given an initial population of 210000, hence:
- a = 210000
The population increases by 12.5% each year, hence:
- b = 100% + 12.5% = 112.5% = 1.125
The exponential function is given by
Find out more on exponential function at: brainly.com/question/12940982
Question:
Evaluate the expression 5^x - 3^x for x=2
Answer:
5^x - 3^x for x=2 is 16
Step-by-step explanation:
Given
5^x - 3^x
x=2
Required
Evaluate
When fazed with question like this all you need is to substitute the value of x (or any other variable{s} used) in the expression.
Recall that x = 2
So, you have to substitute 2 for x in 5^x - 3^x
This gives
This can be further solved in 2 ways
1. Solve directly
=
= 16
2. Expand using difference of two squares.
Difference of two squares is represented by
By comparison
becomes
For both ways, we'll arrive at the same answer.
Hence, 5^x - 3^x for x=2 is 16