9 is the blank.
(a+b)^2 = a^2 + 2ab + b^2
a = x
b = 3
(x+3)^2 = x^2 + 6x + 9
75 + 25 x = 30 + 40 x
x = 3
If you rent them for 3 hours they have the same payment of 150
When x = 1
5(1) = -y + 6
5 = -y + 6
y = 6 - 5 = 1
When x = 2
5(2) = -y + 6
10 = -y + 6
y = 6 - 10 = -4
When x = 3
5(3) = -y + 6
15 = -y + 6
y = 6 - 15 = -9
Answer:
807
Step-by-step explanation:
3×19×14+18/2
57×14+18/2
798+14/2
798+9
807
Answer: 3.1
Step-by-step explanation:
