Algerbra 1b plz help i'll fan and give a medal

Question

anonymous · Answer

For the Lesson 1:
The answer is A. We must have one and only one unique value of x for every y. For example: {(1,2), (1,3)} this is not a function, since the domain 1 has different in every pair. But this {(1,2), (2,3)} this is a function.

For Lesson 2:
The answer is C. In this equation throw the '+7y' part to the other side. You will get this:$$5x \ge 22 - 7y$$ puy '-28' in place of y, you will get $$5x \ge 50 => x \ge 10$$

For Lesson 3:
Lets call leptop numbers 'x' and desktops 'y'. From the article we understand that:
$$x = y + 8$$
And thir sum will give us 156.
$$x + y = 156$$ $$2y + 8 = 156$$ $$y = 74$$ $$x = 82$$

Lesson 4:
Lets simplify this inequality, shall we. Together 'y's and 'x's in one place:
$$-3x > 5y - 2y + 9$$ $$-x > y + 3$$ Throw the 3 other side and and multipy all sides by (-1), you will get the answer A.

anonymous · Answer

Lesson 6:
This is a simple equation where you put 83 in place of 'C':
$$83 = 24.50t + 9.50 = 3$$

Lesson 7:
The ansfer is F. Since we are depended on the number of studets, and number of students doesn't depend on something, the answer is F.