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Arada [10]
2 years ago
8

Question 6

Mathematics
1 answer:
netineya [11]2 years ago
4 0

Answer:

y= 84

Step-by-step explanation:

y = kx

where k is the constant

k = y/x = 91/13 = 7

the value of Y when x= 12

y = kx =7(12)

y =84

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     (rate for Roy) (hour) = (dollars / hour) (hour)

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     (hour) = (dollars) / (rate for Roy)           Plug in $225 charged to Roy

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       hour = $225 / ($50/hour)             ( 1 over 1 / hour )  = hour  

                = $(225/50) hour            think about  1 / (1/2)  = 2  the same with units

      hour =  4.5 hours

     

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