What value of x is in the solution set of 9(2x + 1) < 9x – 18?

–4
–3
–2
–1

Natasha spent 1 1/2 hours on the beach. she fell asleep for 3/4 of the time she was on the beach and then woke up with a terrible sunburn. how many hours was natasha asleep on the beach?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Find the amplitude of a sinusoidal function that models this temperature variation