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B. -5.

Step-by-step explanation:

fg(x) = (x - 1)(5x^2 + 19x - 3)

= 5x^3  + 14x^2  - 22x + 3

So fg(-4) = 5(-4)^3 + 14(-4)2 -22(-4) + 3

= -320 + 224 + 88 + 3

= -5.

fdvs

step-by-step explanation: vsfdvsfvd

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