Please simplify: (-2b^3)^4-3(-2b^4)^3

Alex took his brother to a birthday party. the party was scheduled to last for 1 and 3/4 hours but they stayed for 4/5 of an hour more. how long did she stay at the party?

The equation of line wx is y=2x-5. write an equation of a line perpendicular to line wx in slopeintercept form the contains points (-1,-2)

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6