The answer is A.
The population doubles every year, so that means we multiply the original population of 150 by 2 each year.
Step-by-step explanation:
Given.


Take the second equation and subtract 2y to both sides.


Substitute x into the first equation and simplify.




Invert.

Substitute Y into your second equation.



Add -6 to both sides.


Answer:
(6, -3)
Answer:
josh is 11 and billy is 15
Step-by-step explanation:
yooo
The missing factor is (a -1) I believe. If you foil (5a + 9)(a - 1) you would get 5a^2 + 4a - 9.