50 units needed, 12 units per case what is the number of cases and the number of additional units?

Evaluate the following expression 1/3^2

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?