Last years phone model had a battery that lasted 15 hours. This year
the battery only last for 7.5 hours.
What was the percent the battery life
decreased?

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

Determine if the function below is continuous. a. continuous b. not continuous, 1 hole c. not continuous, > 2 holes d. not continuous, 2 holes

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.