A couple decides that in 15 years they will need to have saved $38,000 for their 3-year old child's post-secondary education. How much should be invested now at 4.8% annual interest, compounded weekly, in order to save this amount for their child's post secondary education?

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.

Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?