Colin asked some of his classmates how many minutes they spent working on their math homework last night. He created a dot plot to show his results. What is the range of the data Colin collected?
20
11
25
5

For each proportion find the unknown number x 1/5/8=×/15

Which graph represents the parent function of y=(x+2)(x-2)

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.