Ajacket selling for $100 is on sale for 5% off

Pick the description of a geometric object that best matches the real world object box for a deck of card

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?