I have 2 twenty dollar bills, a five dollar, 3 one dollar coins, 2 twenty-five cents pieces and 3 ten cents coins in my pocket. How much money do i have in my pocket?

128

Step-by-step explanation:

two twenty dollars which is 40,five dollars 5,three one dollars which is 3,two twenty five cents which is 25+25=50,three ten cents which is 3×10=30

40 +5+3+50+30

=128

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: