Help me due today it is math

What is the value of the product (3-2i)(3+2i)?

After reading 80% of her e-mails in her inbox, danette still has m unread e-mails. which of the following expressions could represent the number of e-mails danette had in her inbox before she started reading? choose 2 answers: (choice a) 5m (choice b) 1.8m (choice c) 80m (choice d) m/0.8 (choice e) m/1−0.8

What is the solution to the system of equations? y=1.5-3 y=-x