True or false? Explain.

If f = {(1, 1), (2, 4), (3, 9)}, then f(5)=25

guys pls stuck on HW

Can someone me and do the problem plz so i can understand it more better

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.