Answer:
4 hours, $60
Step-by-step explanation:
2\16
1/4
A P E X
x = 4
a = i-2j
b = 2i-xj
1 = k•2
-2 = k•(-x)
=> 1/2 = k
=> (-2)/(-x) = k
=> 1/2 = (-2)/(-x) => 1/2 = 2/x => x = 4
4
x=5*0.8=4
