Asnail finds itself at the bottom of a well. the well is 1530 centimeters deep. each day the snail struggles up 180 centimeters and then stops to rest. while it is resting the snail slides down 30 centimeters. how long before it reaches the top of the well?

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.