I need help with this. By the way this a solving real life inequalities problem;)

Answer:
x≥12, Michael must grow for 12 more months (a year) before he can ride a roller coaster.
Step-by-step explanation:
The inequality to represent how tall you must be to go on a roller coaster is
x≥48 because you must be a minimum of 48 inches tall, 'x' represents how tall you must be
If Michael is already 42 inches tall, that is his base point but you need to know how many more months he will need to grow for.
1/2x represents the amount of months Michael needs to grow, x is the unknown variable we need to solve for which represents the months he needs to grow, 1/2 is how many inches he grows in 1 month
42+1/2x≥ 48
subtract 42 from each side) 1/2x≥6
multiply both sides by 2) x≥12