What is the approximate circumference of a circle with a radius of 6.5 meters

For what values of b will f(x)= logbx be a decreasing function? (16 )

What are “like terms”? why can we only add like terms?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?