The total cost of an item including sales tax is directly proportional to its price. if the total cost of a $24 item is $25.44, what is the total cost on a $75 item?

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What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.