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Correct me If i'm Wrong.......its a bit logic i don't know whether answer is correct or not

B) a =1.7  and b = 1.26

HOW:

y = a + bx

∑y =∑(a+bx)

80 =10*a + b*∑x

80 = 10*a + b*50

8 = a+b*5

now use options to verify your answer

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