Please help! I will mark as brainliest. <3

(-∞,-4)

Step-by-step explanation:

1. Move like terms together

-4x + 18 ≤ - 2 -9x

Move -9x, the sign changes to a positive

-4x + 18 +9x ≤ -2

Move 18, the sign changes to a negative

-4x + 9x ≤ - 2 -18

2. Combine like terms

-4x+9x becomes 5x

-2-18 becomes -20

The new equation is 5x≤-20

3. Divide both sides by 5

5x÷5=x

-20÷5=-4

x≤-4

4. Write in interval notation

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.