Adjacent angles ABD and DBC. The measure of angle DBC is 40 degrees.

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.

Guys i need ! graded assignment grade 8 checkpoint 2, part 2 answer the questions below. when you are finished, submit this assignment to your teacher by the due date for full credit. total score: of 9 points (score for question 1: of 4 points) 1. the cost of renting a car for a day is $0.50 per mile plus a $15 flat fee. (a) write an equation to represent this relationship. let x be the number of miles driven and y be the total cost for the day. (b) what does the graph of this equation form on a coordinate plane? explain. (c) what is the slope and the y-intercept of the graph of the relationship? explain.