The probability that your call to a service line is answered in less than 30 seconds is 0.85. Assume that your calls are independent. (a) If you call 15 times, what is the probability that exactly 9 of your calls are answered within 30 seconds

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

i think it might be a but you might want a second opinion