Find measurement of f to the nearest degree

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9

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