Which choice is equivalent to the quotient below?

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*