Two students, Matt and billy , each calculated the volume of a spherical ball with a diameter of 15 centimeters. their work is shown below

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.