The cost of manufacturing lawn mowers is $12,320 in overhead costs and $396 per lawn mower in production costs. marketing studies show that the best selling price is $452 per lawn mower. find the cost function, c(x), the revenue function, r(x), and the profit function, p(x), that model this scenario for x lawn mowers manufactured and sold.

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.