The cost of water would be $615 as he needs 3 acre-feet of water for 205 acre/ft
-(x-5)^2-23
The vertex is (5,-23)
The axis if symmetry is x=5
It opens down (- sign) so it has a maximum
the maximum is at the vertex
the maximum is y = -23
The domain is all real numbers
the range is y<= -23
Answer:
sheeeeeeesh thats alota math
Step-by-step explanation:
X² - 3x - 2 = 0
x = -(-3) ± √((-3)² - 4(1)(-2))
2(1)
x = 3 ± √(9 + 8)
2
x = 3 ± √(17)
2
4x² + 3x + 5
b² - 4ac
(3)² + 4(4)(5)
9 + 4(20)
9 + 80
89