Answer:

Step-by-step explanation:

Replace y = f(x)

Exchange x and y

Solve for y
Subtracting both sides by 3

Taking square on both sides

Adding 2 to both sides

Substitute y = 

Answer:
39%
Step-by-step explanation:
Let's find the answer by using the following formula:
selling price=(paid price)+((paid price)*(percent markup)) which can be written as:
percent markup=((selling price)-(paid price))/(paid price)
percent markup=(27.80-20)/20
percent markup=0.39=39%
In conclusion, the percent markup is 39%.
Answer:
1) 4
2)I think 2
3)4
4)3
5)2
6)1
7)3
Step-by-step explanation:
1) since the x is to squared it is a quadratic equation
3) A and D have same slope=0.5
others were solved using Excel
Answer:
(4,0)
Step-by-step explanation:
4x+2y=16
-4y+x=4
Multiply the first equation by 2
2(4x+2y)=16*2
8x +4y = 32
Add the 2nd equation
8x +4y = 32
x -4y =4
--------------------
9x =36
Divide each side by 9
9x/9 = 36/9
x=4
Now solve for y
-4y +x =4
-4y +4 = 4
Subtract 4 from each side
-4y +4-4=4-4
-4y =0
Divide by -4
-4y/-4 =0/-4
y=0
(4,0)
Answer:
Just substitue every 't' with -4
Step-by-step explanation:
g(-4) = 3*(-4)*(-4) + 2*(-4) + 1
g(-4) = 64-8+1
g(-4) = 57