Herbert goes to the bookstore. he buys 2 books that cost $11 each and 4 books that are on clearance for $9 each. he also buys a magazine that costs $8. he believes that $50 will be enough to buy everything.

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.

Which of the functions below could have created this graph?

Simplify using positive exponents only.