When x = -1, y = - 3 ((-1)^2-4)
When x = 0, y = -4 ((0)^2-4)
When x = 5, y = 21 ((5)^2-4)
When x = 13 y = 165 ((13)^2-4)
You just substitute the values of X into the equation
Answer:
b) 48.5
Step-by-step explanation:
63%= 0.63*77= 48.5
answer: 22
15/7.5 = x/11
cross multiply
7.5x = 165
divide by 7.5 on both sides to get the x alone
7.5x/7.5 = 165/7.5
x = 22
the tree is 22 feet
sorry if it’s wrong
Answer:
5.13%.
Step-by-step explanation:
Amount accumulated in 1 year
= 1600(1 + 0.05/360)^360
= $1682.03
Account's effective annual yield
= 82.03 * 100 / 1600 %
= 5.13%.
So we have 2 variables here: tacos and orders of nachos.
When we translate the paragraphs into equation:

Now, in this situation we can make use the elimination method by converting 3n to -27n.

Add both equations:

So we find that one taco costs $2.75.
We can plug this into any of the first two equations to find n:

So one order of nachos cost $1.40.