Answer:
Third one
Step-by-step explanation:
nine more than four times a number:
4x+9
x is the "mystery number"
"is the same as" is just another way of saying "equals"
one less than twice the number ("the number" is just x):
2x-1
put them all together:
4x+9=2x-1
don't over look it; break it down
<3
