The earth is composed of multiple layers, which can be defined either by composition or by mechanical properties. this layer is key to plate movement. it is a solid but flows like a very viscous fluid. it is the

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