Translate the sentence into an equation. the sum of 3 times a number and 7 is 19.
a. 3(n +
7. = 19
b. (3 + n ) + 7 = 19
c. 7n + 3 = 19
d. 3n + 7 = 19

the answer is d. 75%

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°