not sure how to start this problem and would like someone's help to help me solve it. thank you some for your help in advace​

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Select a graph that have an equation with a < 0

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.