Answer:
4d+12=4(d+3) is the answer
The second one (straight line parallel to the y axis)
a.yes
Step-by-step explanation:
a.angle BCD =b because angle BCD is alternate angle of angle ABC
b.the two angles angle BAC and angle ACD is co-interior angle because they are inside a parallel line
Answer:
(2a + 1)(a + 3) = 2a² + 7a + 3
