Is (–5, 0. 5) a solution of this system? x – 4y = –7, 0. 2x + 2y = 0 substitute (–5, 0. 5) into x – 4y = –7 to get. Substitute (–5, 0. 5) into 0. 2x + 2y = 0 to get. Simplify the above equations to get.

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

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.

These two squirrels live in the same ecosystem. what type of interaction do the images represent? a. direct competition b. mutualism c. interference competition d. symbiotic e. indirect competition