In the equation y = 2x - 8, what number replaces the letter b in the equation y = mx + b

Find the total area for the regular pyramid ( follow the answer set up in the picture)

The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cone's base is 5 centimeters, and its height is 10 centimeters.

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?