Mad easy bro just look think hard and you’ll figure it out
Answer:
d is not a function
Step-by-step explanation:
Answer: y(t) = 600(0.921)^t
Step-by-step explanation:
Given:
Percentage yearly reduction = 7.9%
Initial mass m = 600 mg
time in years = t
An exponential function with yearly decay rate to determine the final mass of the substance is given as:
y(t) = m(f)^t
y(t) = final mass in milligram
m = 600
f = final mass fraction = 1 - 0.079 = 0.921
f = 0.921
Therefore, the exponential function is given as;
y(t) = 600(0.921)^t
The top and bottom faces are each 4-ft by 4-ft.
Their areas are each (4 x 4) = 16 ft².
Total for top and bottom faces = (2 x 16 ft²) = 32 ft².
All four side-faces are 4-ft by 10-ft.
Their areas are each (4 x 10) = 40 ft².
Total for the four side faces = (4 x 40 ft²) = 160 ft² .
Total area of (top and bottom) + (4 sides) =
32 ft² + 160 ft² = <em>192 ft²
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