Find the total number of pupils in year 6

Which expression gives you the distance between the points (5,1)and(9,-6)

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.