Which function has an inverse that is also a function? y=3|x| -5
y= 1/3x-3/4
y = 3x2
Y=1/3x2 – 5x +3
Can someone help me ?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Which of the following best describes the delian problem?

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