26 good luck n I hope you pass
The answer is option 4, (-1,2)
Answer:
x < 21
Step-by-step explanation:
Given
12x < 252 ( divide both sides by 12 )
x < 21
ANSWER

EXPLANATION
The given formula is

We want to solve for T in the given formula.
We multiply through by 3 first to get,

We simplify to get,

We now divide both sides by S to get,

We simplify to obtain:

or

It's probably the first one: "People responded to Earth Day with letters..."
Since it's more of a detail that supports a fact, it's not as important as the other three.