Which of the following are good questions to ask when trying to understand a problem? check all that apply.

a. what is a logical name for the variable?

b. how should i present the solution?

c. does my guess satisfy the equation?

d. what is the variable?

e. what are the units of the variable?

f. is the variable always positive, negative, or either?

The correct answers are:

A. What is a logical name for the variable? ; D. What is the variable? ; E. What are the units of the variable? ; and F. Is the variable always positive, negative, or either?

Explanation:

When solving a problem, we must understand what the variable represents as well as its units.  We must also understand what types of numbers it could be, whether posibive, negative, decimals, fractions, etc.

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step-by-step explanation:

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°