The digital price of a skateboard was $63.99. the owner of the store marked it 15% off. calculate the discount and sale price.

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?