After 1 month, the book club had 5 members. the number of club members doubled every month.

how many members did the club have after 4 months?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

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.