The equation yˆ=6.8x+9.1 is the equation of a regression line in a scatter plot. The x-value is the number of hours after a store opened. The y-value is the total number of customers at the store. Using the equation, how many customers where in the store after 3 hours?

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Step-by-step explanation:

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3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5