10(2k+5) is the correct answer. First you had to rewrite down the problem, and it gave us, [tex]50=10*5[/tex], or [tex]20=10*2[/tex], and [tex]10*2k+10*5[/tex]. Then you had to factor out by the common term of 10, and it gave us the answer is 10(2k+5) is the right answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie
