Eduardo solved the following inequality, and his work is shown below: −5(x + 4) ≥ 4x − 38 −5x − 20 ≥ 4x − 38 −9x − 20 ≥ −38 −9x ≥ −18 x ≥ 2 What mistake did Eduardo make in solving the inequality? A. When dividing by −9, he did not change the direction of the sign. B. He subtracted 4x from both sides when he should have added. C. He added 20 to both sides when he should have subtracted. D. He did not make a mistake.

Can someone pls ! pls answer all. no explanation needed..

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)