If x is the number we get:-
6x + 5 = 4
You can buy 4 shirts because you bought one pair of jean (80 - 29 = 51) and so with the leftover money you could buy 4 shirts because (12 x 4 = 48) and then you'd have a leftover 3 dollars.
<span>Hope this helps: C. Convenience sampling</span>