Answer:
D
Step-by-step explanation:
Answer:
The first answer choice, 6r^2 (4r+3)
Step-by-step explanation:
Good luck! Hope this helped! If you are still confused, please comment!
Answer:
d(t) = -100t
Step-by-step explanation:
The general expression for the linear model is:

Since the submarine already starts at sea level, b=0:

The constant "m" is the rate at which the submarine descends in feet per minute. Considering depth as a negative quantity, m=-100

The linear model that represents the depth of the submarine relative to sea level, in feet, after t minutes is d(t) = -100t.
Answer:
x=2
Step-by-step explanation:
5 ( x - 2) + 4 ( 3 + x) = 20
Distribute
5x -10 +12 +4x = 20
Combine like terms
9x +2 = 20
Subtract 2 from each side
9x+2-2 = 20-2
9x = 18
Divide each side by 9
9x/9 = 18/9
x = 2
(?) is (-1) and that gray blank thing is 3.
Give a brainliest please:-)