Whats the format its suppose to be written in?
UPDATE: Y=

+
Answer:
8
x^
4 + x^
3 − 4x^2 + 1
Step-by-step explanation:
The motion can be modeled as

where
x = the position below the equilibrium position
T = the period of the motion
t = time
The weight returns to its equilibrium position when x = 0.
This occurs when

That is,

Because the weight returns to the equilibrium position when t = 3 s, therefore
T = 12 s
The motion is

When t = 1 s, the position of the weight from equilibrium is

Answer:
Solutions
There are two equations in the system of equations in this problem.
Let x = lemonade and y = hot dogs
Equation # 1
x + y = 86
This says that t<span>he vendor sold 86 items.
</span>Equation # 2
2x + 5y = 330
= $2 for each lemonade
= $5 for each hot dog.
= total amount earned is $330.
Only these two equations are true and needed.
It would be 7x hope this helps