Answer:
A $0.02
Step-by-step explanation:
Let's solve how much does it cost to have a bulb on for an hour. ⇒ 120 watt = 0.1 kilowatt per hour which costs 0.20 per kilowatt per ⇒ 0.1 kilowatt per hour* 0.20 = 0.02 dollars in an hour.
First lets remove the initial fee
150 is how much she is charging you per hour.
If each hour is 55, lets divide 150 by 55.
She charged you for 2.7 hours (almost 3) of service
Since we don't have the measurements for the trapezoid, we can't find the exact cost. However, I can explain how to solve the problem.
First, you need to find the the total area of the pool cover. Since it is in the shape of a trapezoid, use the formula below.
A = 0.5(h)(the sum of the bases)
Once you have the area, multiply by 0.79 and you will have the cost.
Number8)4n+6-2n=2(n+3)
4n+6-2n=2n+6 then collect the like terms
(4n-2n-2n=0)
0n=0
2(3b-4)=4b-11
6b-8=4b-11 collect the like terms
(6b-4b=2b)(-11+8=-3)
answer
2b=-3 then divide both sides by 2
b=-1.5
28.86 is the answer hopes this helped you
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