how do you sove this question

Algebra
Tutor: None Selected Time limit: 1 Day

if the graph of an expontial function passes through the points (1,60) and 3,540, find an equation of the function 

Apr 19th, 2015

Exponential functions are, for example, y=x^3, y=x^4, etc.

3^x = (540-60), since 1 to any exponent is 1, then in order to obtain 60, we just add 60 to the equation, but we are looking for an exponent of 3 to give us 540-60

3^x = 480

log 3^x = log (480) (take log of both sides)

x log 3 = log 480 (bring down x, law of logs)

x = log 480/log 3 (solve for x)

x = 5.619 approx. 5.62

y = x^(5.62) + 60




Apr 19th, 2015

^   whats this for 

Apr 19th, 2015

That stand for (power to), since I don't have the superscript key on my computer. Do you know when you see parabola equation and it says y= x^2 (y equals x squared?).  ^ is my shortcut for (raised to the power).

Just like x^3 (x raised to the 3rd power), I do not have access to special math symbols on my computer such as "squared", "cubed" "square root" or "cube root". My computer is old and every time I try to add math add-ins, they never work. I guess my computer is too old.

Apr 19th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Apr 19th, 2015
...
Apr 19th, 2015
Mar 30th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer