F(x) = 3 x² + 5 x - 7 and g(x) = x² + 8 x + 10 Asked=
a. f(x) + g(x)=
b. f(x) - g(x)

f(x) = 2x + 5 , g(x) = x - 1
asked=
f(x) • g(x)

Please help..​

a. is correct

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