19. The local fairgrounds holds a farmer’s market every Thursday and Sunday. Growers must pay 6.5% of what they earn in taxes, and $140 a month to rent the booth space. How much does a grower earn who brings in $330.00 in a given month?
a. $198.25 b. $188.45 c. $148.35 d. $168.55

Which product is positive a is 2/5 -8/9 -1/3 -2/7 b is -2/5 8/9 -1/3 -2/7 c is 2/5 8/9 1/3 -2/7 d is -2/5 -8/9 1/3 2/7

Multiply. write your answer in simplest form. 3/8 x 5/7

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.