I think this question is a part of another question; you can have any ratio that can add up to 114 cm.
Add 165 to 245. That is a total of 410kWh.
245kWh is more than 50% of 410kWh.
So, according to the plan, you will pay NightTimer rate for kWh at night and DayTimer rate during the day.
The work done:

The raw, accurate, answer is that the value to pay is $22.08085.
In real terms, it is closer to your $22.08 option. That is the one I'd take.
Given data:
The given equation is 5x^2= -11x-2.
The given equation can be written as,

Thus, the values of x are x=-1/5, and x= -2.
It is 6 as one of them is +3 and the other is -3, the difference between 3 and -3 is 6
Answer: The first choice ( y=7x+36)
Explanation:
Since we know the slope is 7 and there is a point of (-5,1) we can easily find the b (y intercept).
Equation would be 1=7(-5)+b
First we time 7 by -5 which is -35
Next we add 35 to the other side of the equation which is 36=b
So 36 would be your y intercept