Answer:
there are a 112 against
Step-by-step explanation:30% of 160=48 ( 160*0.30=48)
160-48=112
Answer:
,
and 
Step-by-step explanation:
The vector equation of the line is:


The parametric equations of the line are:
and 
Answer:

Step-by-step explanation:

Answer:
B
Step-by-step explanation:
In A, it says that 9s +7c can be lower or equal to 160. This is wrong.
In C, it says that 9s +7c can only be higher than 160, when the question says at least, which means it can also be equal to 160, making it wrong.
In D, it says that 9s +7c can be lower or equal to 20. This is wrong.
Through elimination, only B can be right.