What is a reasonable product of 3 9/10× 4 1/5?

Simplify the expression. enter the correct answer.

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

It says factor each expression 49x-28?