SOLUTION: Word problems are so difficult for me to understand! Please help! Thanks. For an engine with a displacement of 2.8L, the function given by the equation d=Cn^-2 can be used to dete

Question 469699: Word problems are so difficult for me to understand! Please help! Thanks.
For an engine with a displacement of 2.8L, the function given by the equation d=Cn^-2 can be used to determine the diameter size of the carburetor's opening, d, in millimeters, where n is the number of rpm's at which the engive achieves peak performace and C is a constant.
a. solve the equation for n.
b. Suppose the carburetor's opening is 84 mm and rpm's are 4480. Find the value of C that makes the equation true.
c. use the value of c that you found to determine the rpm's at which the engine produces peak power when the carburetor's opening is 81 mm.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

(a)
Solve for
Take the log of both sides
using the rule:

Now use the above rule in reverse
AMP Parsing Error of [ log(n) = log(d^(1/(-2C)) ]: Invalid function: opening bracket expected at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 88. .
Use the rule:
If ,
then

------------------
(b)

Find

Let

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