In realistic world there are so many examples which use exponential and logarithmic functions.
Use of Logarithmic function
We can find use of logarithmic function in measuring earthquake (Richter Scale) , the brightness of stars , and chemistry(pH balance , measure of acidity and alkalinity)
For example:
In Richter Scale , a logarithmic function that is used to measure the magnitude of earthquake.
If A = measure of amplitude of earthquake wave.
= Amplitude of smallest detectable wave.
From this we can find R the Richter scale measure of magnitude of earthquake.
Use of Exponential Function:Exponential function may use in finding compound interest , population growth , radioactivity decay , etc.
For example :
As we know the formula for compound interest is
Where P is principal amount , r = rate of interest(decimal) , n is the number of compounding period , t is time.
For
U have to multiply straight across ?!??!??!?!!??
Answer:5.4
Step-by-step explanation:
x ≤ 2
3 x
(— • (35x - 14)) - ((21 • —) + 3) ≤ 0
7 2 3 3 • 2
3 = — = —————
1 2
Multiply both sides by 2
9.2 Divide both sides by 9