The school store sells packs of 12 pens for $2.40.

select the three unit rates that describe this sale.

there is more than one correct answer

$0.20 per pen

$2.40 per pack of pens

5 pens per dollar

120 pens per $24

Evaluate the expression for the given value of the variable 7a - 4a for a =8

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.