If you divide both sides by -4 you get

So, you wrote the equation in the form y=kx, and in this form k is the constant of variation. So, the constant is -2.
Answer:

Step-by-step explanation:
To navigate through this problem, start by finding how much each senator can complete in a fixed amount of time. I'll choose 10 as it's the greatest common factor of 30 and 50.
In 10 minutes, the junior senator can complete
of the labyrinth.
In 10 minutes, the senior senator can complete
of the labyrinth.
Therefore, working together, they can complete
of the labyrinth in 10 minutes. Thus, it will take them
to complete one labyrinth.
The amount of time it take them to complete 12 labyrinths is then 
Answer:
x = 60
Step-by-step explanation:
The question is asking
$14,700 * (1 - 8%)^x = $100
$14,700 * (1 - 0.08)^x = $100
$14,700 * (0.92)^x = $100
(0.92)^x = $100/$14,700
log(0.92^x) = log($100/$14,700)
x * log(0.92) = log(0.0068027)
x = log(0.0068027)/log(0.92)
x = 59.85
Since this question is asking in terms of years, we always round up (in this case to 60), as it won't fully be worth $100 by the beginning of the 59th year.
Answer:
x<-5
Step-by-step explanation:
Subtract 15 from both sides, divide both sides by 5
2,700 / 12 = 225
225 / 5 = 45
They can make 45 necklaces.