If cos y = 1/2, then what is the positive value of cos 1/2y, in simplest radical form with a rational denominator?

Which of the following graphs represents the function f(x) = 2^x

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

Solve for x and select the correct answer