Hey there! Let's make a linear equation, and we'll plug in our values. We have: total = 20 + 2(number of lobsters caught) We'll have t as total money earned and l as amount of lobsters. t = 20 + 2l However, she wants to make 130 dollars in 5 days. We plug in 130 for the total and we multiply the 20 by 5, as that would be her payment in five days excluding the lobsters caught. 130 = 20(5) + 2l We simplify the right: 130 = 100 + 2l Subtract 100 from both sides 30 = 2l Divide both sides by 2 She needs to catch 15 lobsters. Hope this helps!