Answer:
x = 4
Step-by-step explanation:
Cross multiply:
21*2 = 14(x - 1)
42 = 14x - 14
14x = 56
x = 4
D, B, and A are collinear. Yes they are coplanar because they all lay on the same plane. And I don’t understand the last question
Answer:
P = 157.5 units
Step-by-step explanation:
5.5 hours. 5 hours and 30 minutes
The total pages she wants to finish (360) minus the pages she has read (112.5) equals to 247.5
Then divide it by the 45 (the rate of pages she reads per hour)
5.5 hours.
Answer: 
Step-by-step explanation:
