What are the focus and directrix of the parabola with the equation y=1/16x^2

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

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?