The product of 8 and 30 is 240.
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If the size is 30 inches x 8 inches then the area = 30 x 8 = 240 square inches. If the size was in feet, multiply 240 by 144.
(3x - 30)(x + 8) can also simplify to 3(x - 10)(x + 8)
(1/8)x - 5 >= 30 Add '5' to both sides (1/8)x >= 35 Multiply both sides by '8' x >= 280 So 'x' is at least 280.
8(30) - 40 = 240 - 40 = 200.
24/8 = 3 so 24/.8 = 30