Answer:
Step-by-step explanation:
Remark
You can use the two points marked to find the slope. One of them is the y intercept which you need to get the equation.
(0,4) is one of the points. This is the y intercept.
(8,0) is the other point you can use
Slope
m = (y2 - y1)/(x2 - x1)
Givens
y2 = 4
y1 = 0
x2 = 0
x1 = 8
Solution
m = (4 - 0) / (0 - 8)
m = 4/-8
m = - 1/2
y_intercept = 4
Equation
y = -1/2 x + 4
Option A is correct.
If we evaluate the function at , i.e. at the beginning, we have
with each minute, you multiply the current number of cell by 2, so they double every minute.
Option B is incorrect, because if the number of cells increases by 2 every minute, the function would be
Option C is incorrect, because after one minute (i.e. when x=1) we have
cells, so 75 is not the number of cells after one minute
Option D is incorrect in both the initial value and the behaviour of the function
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Answer:
85 / 8
Step-by-step explanation:
-6+9i
9i = 6
i = 6/9 or 2/3