Answer:
A. it cost the company $90.00 in electricity
You add the ratio numbers to make 10 then divide 150 by 10. (15)
then you multiply 15 by 1:4:5
to make 15:60:75
Answer h=-80
vvv STEP BY STEP vvv
Multiply both sides of the equation by
52-h=28
Move constant to the right-hand side and change its sign
-h=28+52
Add the numbers
-h=80
Change the signs on both sides of the equation
h=-80
You can use the Ruffini's rule. The answer using this method is,

And you can see that the multiplicity of the zero x=-4 is 2, and the multiplicity of the zero x=+3 is 1.
Answer:
a
Step-by-step explanation:
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= 
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= (Decimal: 0.004115)