Lin's grandmother ordered needles that were 0.3125 inches long to administer her medication, but the
pharmacist sent her needles that were 0.6875 inches
long, How much longer were these needles than the
ones she ordered? Show your reasoning.

Which is the completely factored from of xy^3-x^3y

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Simplify the expression 10/11(22z) + (a+5) -1