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. The 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? A.
0.099

B.
0.201

C.
0.231

D.
0.469

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.