Alden made the stem-and-leaf plot below to record the ages of his relatives at their family reunion. Stem Leaf
0 1,3,5,7,9
1 0,3,6,7
2 7,9
3 1,7,7
4 0,4,9
5 2,2,8
6 1,9
7 3,6
8 3

KEY
3|0 = 30 years old

How many of the family members at the reunion were teenagers?

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

sorry i got nothing

step-by-step explanation: