Betty has a checking account and a non-interest bearing savings account. the function c(x), shown below, represents her checking account balance, where x is the number of months. the function s(x), shown below, represents her saving account balance. which function represents betty's total account balance, t(x)? t(x) = |240x + 140| + 450x + 1,500 t(x) = -|240x - 140| + 450x + 1,300 t(x) = -|240x - 140| + 450x + 1,500 t(x) = -|240x - 140| + 450x + 1,400

answer: a

step-by-step explanation:

a

step-by-step explanation:

the answer is a

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: