Miguel deposits $1,000 into a new savings account that pays 4% simple interest annually. Valeria deposits $1,000 into a new savings account that pays 4% interest compounded annually. After 4 years, what will be the difference between the interest earned no Miguel's $1,000 deposit and the interest earned on Valerie's $1,000 deposit?

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.