3x + 2(x + 5) = -2(x - 9) - 15
please give me the answer and step-by-step

Sandy works at a clothing store. she makes $7 per hour plus earns 15% commission on her sales. she worked 75 hours over the last two weeks and had a total of $2,566 in sales before taxes. which of the following is closest to how much she will earn in hourly wages and commission for those two weeks?

Tiffany drives 285,120 feet before lunch and 628,320 feet after lunch. about how many kilometers does she drive all together

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?