Please help out explanation need it

How do i work this problem out using the equation a=pe^rt

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?