Latoya, Ravi, and Kareem sent a total of 81 text messages during the weekend. Ravi sent 2 times as many messages as Kareem. Latoya sent 5 more messages than Kareem. How many messages did they each send?

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?