HELP PLS IVE ASKED THIS LIKE 3 TIMES ALREADY Simplify:
1. ½(2r + 4) - ¼(16 - 8r)
2. (8x - 3) - (2x + 6)
3. (2 - 7y) - 3(y - 9)
4. 2(3x - 4) - (2x - 5)

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

The area of a circle is equal to 1 dm². find the radius of the circle.

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.