The highest possible z-score that is still in the bottom 95% of the systolic blood pressure distribution is z =−1.645 . Use this z-score to determine X, the corresponding systolic blood pressure score. X = This score, X, is the percentile of systolic blood pressure scores among women. The percentile rank of this score is . Systolic blood pressure between 140 and 159 is considered stage 1 hypertension. What percentage of women have systolic blood pressure in this range? 11.13% 13.13% 7.98% 9.01% Systolic blood pressure below 90 is considered hypotension. What percentage of women have systolic blood pressure below 90?

whatare you sayig

step-by-step explanation:

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1