Let number of driveways , she shoveled on Sunday = x
And for 4 driveways , Kendra charges = 4*11=44
Therefore,
143 = 44 + 11x
And that's the model for the given situation .
Subtracting 44 from both sides,
143-44 = 11x
99 = 11x
Dividing both sides by 11
x = 9
Therefore she shoveled 9 driveways on Sunday .
Kendra charges $11 to shovel a driveway .
let us say she shoveled x driveways on Sunday.
Money she made on Sunday =11x
Money she got from shoveling 4 driveways on Saturday = 11*4 =$44
total money she made on weekend = $143
11x+44 =143
11x=143-44
11x= 99
x=9
So she shoveled 9 driveways on Sunday
