[ 2x + y = -9 ] x -3
[- 3x +11= y ] x 2
-6x -3y = 27
-6x + 22 = 2y
-6x +27 = 3y
-6x +22 = 2y
5 = y
-6x -3x5 = 27
-6x -15 = 27
-6x = 42
-x = 42/6
-x = 7
x = -7
answer
x = -7
y = 5
3 packages so there would be at least 21 invitiations
Answer:
B
Step-by-step explanation:
Exponents mean the base times itself
So 2^6 = 2 times itself six times
I hope this helps you
3^2=2^2+length ^2
9-4=length ^2
length = square root of 5
