Plzzz i need some here ( its actually easy)

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?