Hal is asked to write an exponential function to represent the value of a $10,000 investment decreasing at 2% annually. What multiplicative rate of change should Hal use in his function?
Answers
The multiplicative rate of change that should be in Hal’s function = 49/50=0.98
=9.8×10⁻¹
Explanation
The investment of $10,000 decreases by 2% every year. So the following year is usually (100 - 2)=98% of the previous year. This is a geometric progression.
In this case the first term = 10000
The second term = 98% × 10000 = 9800.
The common ratio = 9800/10000=49/50
The multiplicative rate of change that should be in Hal’s function = 49/50=0.98.
The equation of the exponential rate would be;
10,000ₓ0.98ⁿ.
where n is the number years.
Answer: B
Step-by-step explanation:
0.98
E2020
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a vertical pole 5 feet long cast a shadow of 2 feet. if at the same time a nearby tree casts a shadow of 10 feet, how tall is the tree?
0 ≤ x ≤ 20
−10 ≤ x ≤ 30
x ≥ 0
All real numbers
Answers
Procedure
You have to solve this inequality
-2x^2 +40x +600 ≥ 600
-2x^2 +40x ≥ 0
-x^2+20x ≥ 0
x^2 - 20 x ≤ 0
x(x-20) ≤ 0
That is only possible if the two factors have different signs.
Let's examine the possibilities
x ≥ 0 and x -20 ≤ 0⇔x≤20, that is 0≤x≤20
The other possibility is
x ≤ 0 and x - 20 ≥ 0 ⇔x≥20. This conditions is not possible.
So the solution is 0≤x≤20
Answers
The question would be SO much easier to answer if we could
SEE the graphed function, or even just its equation.
14-2
O 14+2
0 -14+2
14-2
Answers
Answer:
-14 +2
Step-by-step explanation:
because you would do kcc aka keep change change
you would keep -14 change the minus to a addition sign and change the -2 to a positive 2
Answers
Answer:
v = 180
Step-by-step explanation:
324 = 144 + v
v = 324 - 144
v = 180
Answer:
v = 180
Step-by-step explanation:
The equation is basically 324 = 144 + v
Then you just solve the equation:
324 = 144 + v
-144 = -144
180 = v
Hope this is what you were looking for.
26 + (–3) ∙ (–8)
a. –184
b. –2
c. 2
d. 50
Answers
2) 2x³-13x²+15x
3) 9x²-15x
4) 2x³-15x