Let s represent the price of a meal in the local coffee shop. Diana leaves a tip of 15%. Which
expression represents the total amount Diana
pays?

A- 1.15s

B- s

C- 15s

D- s+15

Can someone me with my hwplz(only the circled ones)

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

What is sin 7x/4 ? i need on this urgent trig