Which expression is equivalent to (12x−5y−1)+(17y−4−13x−3y)?.

Why do you think electric energy for households is generally supplied by power plants instead of by an electric generator at home.

Which of the following must happen in order for productivity to increase? a. production levels remain unchanged while inputs increase. b. production levels rise while inputs decrease. c. production levels fall while inputs increase.

Feedback is given with little or no reservation 1.supportive 2.high-monitoring 3.positive 4.low-monitoring ?