GracelynneW484994 GracelynneW484994 31-10-2022 Mathematics contestada Problem b (4.0 x 10^2)(4.0 x 10^7)Problem c (7.0 x 10^-3)(6.0 x 10^6)Problem d (1.2 x 10^7)(2.2 x 10^-3)Problem e (2.0 x 10^-4)(7.1 x 10^9)