Yes you are correct. You divide both sides by -6 to isolate x. Dividing both sides by a negative number will flip the inequality sign.
If you need to graph this, then you'll have a closed circle at -12 on the number line. Then you'll have shading to the left of this closed circle. The closed circle indicates "include this endpoint as part of the shaded solution set".
They are x = 8 and x = -4
(20+2.5)x = cost
when x equals number of tickets
(20+2.5)24 = 540
Very good question, well the answer you might be looking for is
Revenue: 28,500 $
Profit: 13,500
From what I calculated
Have a blessed day and God bless.
Answer:
f-¹(x) = -⅕x - ⅘
Step-by-step explanation:
f(x) = -5x - 4 → x = -5y - 4 → 5y = - x - 4 → y = -⅕x - ⅘ → f-¹(x) = -⅕x - ⅘
