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?

45

step-by-step explanation:

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10