Write an equation which models this situation.
sam's hair was known to grow very rapidly. it began at a length of 6in and grew at a rate of 14% each week.
a) y=6(.086)^x
b) y=6(1+14)^x
c) y=6(1.14)^x
d)y=6(0.14)^x

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.