Select the correct answer. On discovering that her family had a 70% risk of heart attack, Erin took a treadmill test to check her own potential of having a heart attack. Th
doctors told her that the reliability of the stress test is 67%. What is the probability that Erin will have a heart attack and the test predicts it?
O A. 0.099
O B. 0.201
O C. 0.231
O D. 0.469

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1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

b is the answer that makes most sense

step-by-step explanation: