Does 256 represent the positive square root of 256, the negative square root of 256, or both? Explain

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

Which function has the same domain as y=2x

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