Answer:
A. less than three batteries were used in five hours.
Answer:
r(t) and s(t) are parallel.
Step-by-step explanation:
Given that :
the lines represented by the vector equations are:
r(t)=⟨1−t,3+2t,−3t⟩
s(t)=⟨2t,−3−4t,3+6t⟩
The objective is to determine if the following lines represented by the vector equations below intersect, are parallel, are skew, or are identical.
NOTE:
Two lines will be parallel if 
here;

Thus;



∴

Hence, we can conclude that r(t) and s(t) are parallel.
Answer:-5
Step-by-step explanation:
Answer:
5x+7
Step-by-step explanation:
Subtract like terms
(8x+9)-(3x+2)
8x-3x=5x
9-2=7
5x+7 should be your answer I believe