Simplify the mathematical expressions to determine the product or quotient in scientific notation. Round so the first factor goes to the tenths
place.
3.3x10³
7.8
3.7
2.1x10-3
(8.6x107)-(9.1x10-8)
(6.9x105)-(4.8x10-3)
(3.7 x 102)-(4.6 x 10-3)
(1.4 x 10-6). (5.7 x 108)
(3.1 x 105). (5.3 x 10-⁹)
(7.3 x 102). (6.1 x 10-7)