Find the inner product for (-4, 9, 8) * (3,2,-2) and state whether the vectors are perpendicular. a.-10; no
c.10; no
b.-10; yes
d.10; yes

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same