The equation below shows the formula for calculating the shipping cost, C, for book orders, where p is the weight of the books in pounds. There is a $3 handling fee on every order.
C = $0.75p + $3
Which statement is not true about the cost?
The cost of mailing 10 pounds of books is twice the cost for 5 pounds of books.
The cost for shipping books varies according to the weight of the order.
The cost of the handling fee is unrelated to the wright of the books.
The cost of mailing books increases by $0.75 for each additional pound of books,

i pretty sure it is

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

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step-by-step explanation: