Which of the following represents the top view of the figure

Which is the standard form for this number? (4 x 1 100 ) + (8 x 1 1,000 ) + ( 3 x 1 100,000 ) ? a) 0.004803 b) 0.04803 c) 0.0483 d) 0.483

Find the solution of this system of equation -7x+y=-20 9x-3y=36

What expression is equivalent to log3(x+4)