Alli can mop Strong Hall in 10 hours. Working together, Alli and Zach mop Strong Hall in 4 hours. How long would it take Zach to do this job alone?

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Drag each tile to the correct box. not all tiles will be used. consider the recursively defined function below. create the first five terms of the sequence defined by the given function

Which of the functions graphed below has a removable discontinuity?