What does it mean when ph is slightly acidic? a. 7.1 - 9.0 b. 1.0 - 4.9 c. 7.0 d. 5.0 - 6.9?

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.