Eight subtracted from the square of a number

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Which one is true about the hexagons ?

The price of one share of a company’s stock declined $13.89 every day for 2.5 days what was the stocks total decline in price