Respuesta :

x = amount of lawns
y = amount of dog walks

25x + 15y = 1975

25x + 15(50) = 1975
25x + 750 = 1975
25x = 1225
x = 49

so x ≤ 49  (this number depends on how much Sarah walks)
y ≥ 50 (is how much Sarah walks)

hope this helps

jacobmoney+sarahmoney=totalmoney

totalmoney≥1975 so they can go

so jacobmoney+sarahmoney≥1975

find each


jacobmoney=lawn money=number of lawns mowed times cost per lawn=x times 25=25x

sarahmoney=dogmoney=number of dogs walked times cost per dog walk=y times 15=15y


so therfor

25x+15y≥1975


additionally, number of dog walks that sarah does is no mroea than 4 times number of lawns mowed, means y≤4x

and sarah will walk at least 50 dogs

y≥50


the constraints are

25x+15y≥1975

y≤4x

y≥50