Carla is 3 times older than her sister megan. eight years ago, carla was 18 years older than her sister. what is megan's age? i need writing the equation out and answering

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?