Answer: 2
Step-by-step explanation:
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Answer:
499
Step-by-step explanation:
Answer:
f(-3) = 44
Step-by-step explanation:
f(x) = 2x² - 5x + 11
Substitute the value.
f(-3) = 2(-3)² - 5(-3) + 11
Raise -3 to the power of 2.
f(-3) = 2(9) - 5(-3) + 11
Multiply 2 and 9.
f(-3) = 18 - 5(-3) + 11
Multiply -5 and -3.
f(-3) = 18 + 15 + 11
Add 18 and 15.
f(-3) = 33 + 11
Add 33 and 11.
f(-3) = 44
After 200 years, 9.84 grams of Cesium would remain.
Let N represent the amount of substance after t years
The half-life of a cesium is 30 years., hence, this can be represented by exponential function:

where a is the initial value and b is the multiplier.
There were initially 1000g of the substance
a) The exponential model for this situation is:

b) After 200 years (t = 200), the amount of Cesium remaining is:

Hence after 200 years, 9.84 grams of Cesium would remain
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