For each of the following, carry out the mathematical operation and report answers in scientific notation.
(a) (3.8x 106)-(7.9 × 10-3) X 10 (Select) E
(b) (5.6 x 102) × 10 (select)
(c) (6.9 x 106) (1.8 x 107) 10 (select)
(d) (1.76 x 102)-(5.0 × 10-10) 10 (select)
(e) (5.56 × 106) + (5.9 × 105 ) ×10 (select)
(f) (3.36 × 107) ÷ (2.94 × 10-1 ) × 10 (select)