Which of the following is a solution for the inequality 2x < 9?

x = 6
x = 5.5
x = 4.5
x = 4

x = 4

Step-by-step explanation:

Treat the inequality symbol like an equal sign with rules when it comes to dividing and multiplying each side by negatives, however, that rule irrelevant in this case.

Rewrite

2x < 9

Get x alone by dividing by 2

x < 9/2

Simplify into a decimal

x < 4.5

Now that we have that, we must find an answer which is Less than 4.5 because it is not a less than or equal to statement.

x = 4 is the only one which is proven true to this inequality and therefore is our answer

Hope this helps,

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is: