Classify the polynomial by its number of terms.4x^2-2

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.

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.