Apyrotechnician plans for two fireworks to explode together at the same height in the air. they travel at speeds shown below, (firework a: 340 ft/s, firework b: 320 ft/s) firework b is launched 0.25 s before firework a. how many seconds after firework b launches will both fireworks explode?

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total