3. In 2010, approximately 2.109 trillion text messages were sent, which is an increase from 56 billion in 2004. a. Write an exponential model representing the number of text message sent.
b. How could we change the model to show the number of text messages sent each week?
Can y’all help me

What is the volume of the sphere shown below with a radius of 3?

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.