Abus company took a tour bus on the ferry when there were 30 people aboard. the ferry charged the bus company $180.the following week, the bus had 50 people on board and the ferry charged them $220.hiw much is the "base rate" for the empty bus? how much does each person cost? show this using y=mx+b

$2 variable per person, 120 base fee Step-by-step explanation:

the delta are 20 persons and $40 therefore variable cost are $2 per person

base fee: 180-30*2=120

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560