Which number line model represents the expression
5.5+ (-3)?5 1/2 + (-3 )

True or false? a triangle can be circumscribed about a given circle

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

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary