Answer: its not the 3 that are in the picture
Step-by-step explanation:
You should ask your classmates for the answers
Let 11x + 15y + 23 = 0 be equation (1)
And 7x - 2y - 20 = 0 be equation (2)
Multiply equation (1) by 2:
22x + 30y + 46 = 0
Multiply equation (2) by 15:
105x - 30y - 300 = 0
Add equations (1) and (2):
22x + 105x + 30y - 30y + 46 - 300 = 0
127x - 254 = 0
127x = 254
x = 254/127
[x = 2]
Substitute x = 2 in equation (1) to find y:
11(2) + 15y + 23 = 0
22 + 15y + 23 = 0
15y + 45 = 0
15y = -45
y = -45/15
y = -3
Therefore, x = 2 and y = -3.
Answer:
Initial amount: 20
Growth factor: The amount doubles for every integer increase of x
Step-by-step explanation:
I think the equation should be g(x) = 20(2^x) for it to be exponential.
The general form of an exponential equation is g(x) = a(b^x), where a is the initial amount when x = 0, and b is the base, or growth factor.
We can see the amount double by evaluating a few value..
g(0) = 20(2^0) = 20(1) = 20 (initial amount)
g(1) = 20(2^1) = 20(2) = 40
g(2) = 20(2^2) = 20(4) = 80
g(3) = 20(2^3) = 20(8) = 160
This pattern will continue on
