Which expression is equivalent to x^-4? a. x^-4 × ^1 b. x^-2 + x^-2 c. (1/x)^4 d. x^2 - x^6

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?

Run a linear regression to determine an equation (y=mx+b y=mx+b)

Coleen made 1,000 bracelets to sell at a flea market. she sold each bracelet for $5.50. if she sold all of the bracelets, how much money did coleen make? $550 $5,500 $55,000 $550,000