What is the surface area of a rectangular prism. 8yd in length , 5yd in height , and 2yd in width.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?