What is the value of the expression 1/2x^3 + 3.4y when x = 4 and y = 2

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?

The price of a lawn mower is x dollars. the store is having a 75% end of summer clearance sale. which expression can be used to find the clearance price of the mower? a) .25x b) .75x c) x - .25(75) d) x + .25(75)