What arithmetic sequence. 8, 7.3, 6.6, 5.9... What function describes the sequence

What is the value of x? enter your answer in the box. (cm)

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.