1. Which of the following is true about the characteristics of a screening test? (a) A highly sensitive screening test yields a very low number of false positive results
(b) If a screening test is 99% specific, 99% of negative cases are diagnosed negative
(c) A screening test is used to confirm disease and prescribe treatments
(d) None of the above​

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation:

x-3y=4

step-by-step e

its adding 5.5 each time

step-by-step explanation:

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33