Step-by-step explanation:
the function actually is
y = 40(x - 1) + 70 = 40x - 40 + 70 = 40x + 30
still, the slope (the factor of x) is 40.
that means y (the cost) increases by 40 for every additional hour (x increases by 1).
so, the rate of change (slope) is 40/1 = $40 per hour.
Set up a proportion with the similar sides. Then you should find what KB is. Sorry I couldnt answer directly. Im actually doing math right now
I got 8/3 because 4/8 would simplify to 1/2 and the line would be flatter
Answer:

Step-by-step explanation:
Given

Required
Determine the true statement
<em>Options are not given; but, the question can still be attempted.</em>
<em></em>
<em></em>
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Collect Like Terms


Divide through by 7

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<em> -- This is true</em>
Answer:
46
Step-by-step explanation:
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