Nina earns $15 for each yard she mows. she wants to buy a dress that costs $109. how many yards will she need to mow to earn the money for the dress? explain

109 dollars is our final goal, and we get 15 per lawn.  To find out how many, divide these two to see how many lawns are needed.
109/15=7.26
Since we are not going to get paid for only finishing part of the lawn, we must round up to a complete lawn, at 8, to get enough payment.

Hope this helps!