Answer: D. y-5= -7(x-8)
Step-by-step explanation:
point slope form: y-y1=m(x-x1)
slope= -7
point: (8,5)
use the slope and point and plug it into point slope form equation.
y-5= -7(x-8),
The Answer would be D. y-5= -7(x-8)
Answer:
3072
Step-by-step explanation:
The number of cells is initially 3 and is multiplied by 2 every time t increases by 1/2 hour. This means the exponential function describing the number of cells can be written ...
y = (initial value) × (growth factor)^(t/(growth period)
y = 3 × (2^(t/(1/2)) = 3×2^(2t)
After 5 hours, the number of cells will be ...
y = 3×2^(2·5) = 3×2^10 = 3×1024
y = 3072
There are 3072 cells in 5 hours.
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<em>Additional comment</em>
The function could be simplified to ...
y = 3×4^t
39 cubic meters is equal to 39000 litres
Answer:
b. 2 yrs
Step-by-step explanation:
-Given the initial value at time t=0 as $15,400 and the decay rate as 10%.
-The exponential decay is given by the formula;
We can therefore write our decay expression as;
Hence, our exponential decay equation is
b. Having determined the decay function as , we make $12465 our y value and solve for time, t;
Hence, the value of the car will be $12,465 after 2 years