Algebra question need help
Check each true statement about the number

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

41/2 - 1 1/3 what is the answer as a fraction?

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race