4) Determine if the following situation is arithmetic or geometric. Then answer the question using the formula.Eric calls 4 peop
le within one hour of his son's birth to pass along the news. They each pass along the news to 4 new people every hour and so on. Howmuch has the news multiplied by and how many people have heard the news in 6 hours?
1 answer:
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x = 3 or x = 1
note that log 5 is usually taken to mean 5
using the law of logarithms
logx - logy = log ()
the right hand side can be expressed as
log 10000 - log 16 = log () = log 625
divide both sides by log 5
x² - 4x + 7 = = 4
subtract 4 from both sides
x² - 4x + 3 = 0 ← in standard form
(x - 3 )(x - 1) = 0
equate each factor to zero and solve for x
x - 3 = 0 ⇒ x = 3
x - 1 = 0 ⇒ x = 1