License plates in a particular state display 3 letters followed by 2 numbers. How many different license plates can be manufactured for this state?

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

What is the definition of exponential decay?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)