Answer: B
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The winning car in a race beat the second car by 19/100 of a second. The third car was 4/10 of a second behind the second car. B
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Answer: see below
<u>Step-by-step explanation:</u>
The standard form of an exponential equation is: y = a(b)ˣ where
- a is the initial value
- b is the rate
<u>Growth:</u>
Exponential growth is where the final value (y) is greater than the initial value (a).
An example would be the spreading of a rumor:
You tell 1 person (a = 1) who then tells 2 people each minute (b = 2). How many people will they have spread the rumor to after 5 minutes (x = 5)?
y = 1(2)⁵
= 32
<u>Decay:</u>
Exponential decay is where the final value (y) is less than the initial value (a).
An example would be the decrease of bacteria in a person:
A person has 100 bacteria (a = 1) who takes a pill that is supposed to cut in half the number of bacteria each hour (b = 1/2). How many bacteria will the person have after 2 hours (x = 2)?