Match each description with its symbolic representation. 1. P (A) The probability that both events A and B do not occur together
, but either may occur by itself 2. P (A ∩ B) The probability that event A occurs 3. P (A ∪ B) The probability that neither event A or event B occurs 4. 1 - P (A ∩ B) The probability that event A occurs given the fact that event B occurs 5. 1 - P (A ∪ B) The probability that either event A or event B occurs 6. P (A | B) The probability that both event A and event B occur
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compound interest equation for annually compounded
A=final amount
P=principal
r=rate in decimal
t=time in years
given that
A=1550
P=1000
r=5.5%=0.055
find t
divide both sides by 1000
take ln of both sides
use ln rule
divide both sides by ln(1.055)
using a calculator, we get that t=8.18544 yrs
so about 8.2yrs