A banana costs three times as much as an apple. The total cost of 1 banana and 1 apple is $1.60. if a represents the cost of one apple, which equation could you use to find a?

A: a/4 = 1.60
B: 3a = 1.60
C: a = a = 1.60
D: 3a + a = 1.60

What is the quadric regression equation that fits these data

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.

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie