Using an exponential equation, supposing a rate of 5%, it is found that it will take about 2.9 years for Emma's balance to reach $450.
An increasing exponential function is modeled by:
In which:
A(0) is the initial value.
r is the growth rate, as a decimal.
In this problem:
Her initial balance is of $300, hence . A(0)=300
The growth rate is of 15%, hence R =0.15
Then,
It will reach $450 after t years, for which A(t) = 450, hence:
It will take about 2.9 years for Emma's balance to reach $450
Learn more about logarithm here
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Answer:
100 mL
Step-by-step explanation:
Subtract 150 from 250 to get the answer, hope this helped!
Answer:
at least 8 gallons
Step-by-step explanation:
Answer:
Addition property of equality formula
Lesson Summary
We learned that the addition property of equality tells us that if we add the same quantity to both sides of an equation, then our equation remains the same. The formula is if a = b, then a + c = b + c.
Step-by-step explanation:
Answer:
f(-2) = -30
General Formulas and Concepts:
Pre-Alg
- Order of Operations: BPEMDAS
Step-by-step explanation:
Step 1: Define
f(x) = -3x^2 + 9x
f(-2) is x = -2
Step 2: Solve
1. Substitute: f(-2) = -3(-2)^2 + 9(-2)
2. Evaluate: f(-2) = -3(4) + 9(-2)
3. Multiply: f(-2) = -12 - 18
4. Add: f(-2) = -30
