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- 1. Multiple Choice
This equation models the decay of 7.35 grams of a substance with a half-life of 2 days. Write an equivalent equation without a fractional exponent.
R( d )=
7.35(0. 250 )d.with a decay rate of 25%
R( d )
=7.35(0. 70 7)d with a decay rate of 70.7%
- 2. Multiple Choice
The graph represents the temperature of tea for the first 120 min after it is poured into the cup.
The tea started at 204 degrees and approached 114 degrees over time
The tea started at 204 degrees and approached 68 degrees over time
The tea started at 221 degrees
The tea started at 204 and approached 34 degrees over time.
- 3. Multiple Choice
A bank offers a savings account that accrues SIMPLE interest annually based on an initial deposit of $500. If S(t) represents the money in the account at the end of t years and S(5)=575,write a function that could be used to determine the amount of money in the account over time
S(t) = 500 + 15t
S(t) = 15(500)t
S(t) = 500(15)t
- 4. Multiple Choice
Decide if the population growth is linear or exponential and find the equation.
The best equation for this situation is P(t)=4.95+0.229t
The best equation for this situation is P(t)=5.35+0.228t
The equation P(t)=5.24(1.030)t best fits the situation
P(t)=5.35(1.029)t is the best equation
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