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suppose y varies directly with x, and y = 25 when x = 140. What is the value if y when x = 36?

a.) 140
b.) 165
c.) 201.6
d.) 176

1 answer

y=kx
k=y/x=25/140
y=kx= (25/140) x
y=(25/140) 36=25*36/140= ?

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