There are 15 people to choose from and 4 places to put them in. how many of the groups include bob? (this is probability. i made up the problem because i don’t know how to do this and i have a test 4th hour! )

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

Answer for 10 points show work you guys in advanced < 3