Using Cramer’s Rule, what is the value of x in the solution? I dunno if it’s C or D.

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

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.

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76