Afriend needs at least $125 to go on the class trip. he has saved $45. he makes
$20 for each lawn he mows. write and solve an inequality to determine how
many lawns he needs to mow to go on the trip.
anyone?

Say he needs to mow 'x' no of lawns to go on trip,

So money he will get by mowing lawn

=$20x

which is the amount of money he needs

(=$125)

But he already has $45.

So,

$125-$45=$80 is the amount of money he will require just to go trip.

i.e. ,

➧20x ⩽80

which is the required inequality.

Divide both sides by 20,

which means he needs to mow 4 lawns to go on trip.