Respuesta :

The answer is the third choice, "6a+8b."

6a → "6 times a number", where a represents the unknown number.

+8b → "plus 8 times a number", where b represents the unknown number as well.

so it would be 6 times a number so 6a (a is the non-known number) than + 8 and same with a is it is 6a+8b