During a back-to-school sale, notebooks are on sale for 78% off the regular price. The cost of a notebook is represented by n. Which expression does NOT represent the sale
price of the notebooks?
A. 0.22n
B. (1 -0.78)n
C. n - 0.78n
D. 1 + 0.22n

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.