-6y^2 + 9y^2 - y - 9 - 7y^2 + 1 + 10y + 3y simplify the expression by combining like terms right the terms from highest to lowest power of the valuable

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?