help A grocery store buys items and then applies a markup of 75%. What is the retail price of an item that originally costs $5.40?

Which is an equation for the nth terms of the sequence 12,15,18,21

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling