Ametal worker wants to figure out the cost of making a rectangular iron bar. he knows that the required dimensions of the bar are 8.0 cm (width), 0.40 cm (height), and 310 cm (length). if this kind of iron costs $0.015 per cm3, what is the cost of making the bar (to the nearest dollar)? $5

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.