Answer:
x^2-4x+4-(x^2+6x+9)
Step-by-step explanation:
=x^2-4x+4-x^2-6x-9
=-10x - 5
We have been given the equation

It represents the number of people standing to catch a commuter train x hours after 5 A.M.
Now, in order to find the number of people in line at 7 a.m. , we need to substitute x= 2 in the above equation.

Therefore, the number of people in the line at 7 a.m. is 40
D id the correct option.
Answer:
To write 0.111 as a fraction you have to write 0.111 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.
0.111 = 0.111/1 = 1.11/10 = 11.1/100 = 111/1000
And finally we have:
0.111 as a fraction equals 111/1000