Answer:
A zero slope means there is no change in the y -coordinates as the x -coordinates change, so this is a horizontal line.
Step-by-step explanation:
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B2-7b+12=0
(b-3)(b-4)=0
b= 3 or 4
0.0239 x 28 = .6692 (this is the amount of tax paid)
shoes + tax = total
$28 + 0.6692 = $28.6692 which rounds to $28.67 (money is always rounded to the hundredths place)
