PLEASE HELP 30 POINTS

Solve the equation.
60% of 45 =
25% of 80 =
16% of 40 =

Find the cosine function that is represented in the graph.

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

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