Can somebody please help me with this math question

When eating out, record the total cost of your meal (before tip) and the tip that you left. determine the percent of the cost of the meal that you left as a tip.

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.

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true