Seventy percent of adults ages 50 and older want to reach their 100th birthday. You randomly select nine adults ages 50 and older and ask them whether they want to reach their 100th birthday. The random variable represents the number of adults ages 50 and older who want to reach their 100th birthday.

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours

just go here

its what i use

step-by-step explanation:

option (a)

step-by-step explanation:

step 1:   take 2 number whose product equal to 25..

and sum of those two number are -10

step: 2 for example here if we take 5,5 are the number,,

5*5=25

and

5+5=10

but we need -10

so if we take   -5,-5

so -5*-5=25

and -5+(-5)=-10

s0

come the equation

replace -10x by these number

like -5x -5x+25

take common

x(x-5)-5(x-5)=0

(x-5)(x-5)=0