2 × 10-6 times what number is equal to 6 × 10-4

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Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

Which shows the graph of the solution set of 3y – 2x > –18?