Elise is measuring the angles of a triangle. she measures the first two and gets 30° and 100°. what should be the measure of the third angle? a) 50° b) 60° c) 130° d) 230°

The sum of angles in a triangle is 180°.
To obtain the third angle (let's call it x), we simply calculate thus:

30° + 100° + x = 180°

130° + x = 180°

x = 180° - 130°

x = 50° ... (A)

Aand b is what i think

Where is the table?