Find an exponential function to model the data. x: 1,2,3,4,5,6,7 y: 7,16,30,61,124,271,522

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Larry wants to buy some carpeting for his living room. the length of the room is 4 times the width and the total area of the room is 16 square meters. what is the length of the living room