4) if trina multiplied her purchase price by $1.07 to gether total bill. what percent sales tax was she paying?

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges