Aperson wishes to mix coffee worth $6 per pound with coffee worth $3 per pound to get a 120 pound of a mixture worth $4 per pound. how many pounds of the $6 and the $3 coffees will be needed?

answer: 8d

step-by-step explanation:

45+5= 50+5=55+5=60

8

step-by-step explanation:

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: