When their child was born, her parents invested $40,000 in a plan guaranteed to increase by 3% per year. The logarithmic functio
n y equals 77.9 log start fraction x over 40,000 end fraction can be used to determine the number of years, y, it takes for the investment to be worth x dollars.
Exponential graph modeling the equation y equals seventy seven point nine times the log of the quantity x over forty thousand. Graph comes up from the left along the y axis and goes through the point forty thousand comma zero and continues to the right towards infinity.
After how many years will the investment be worth approximately 50% more than it was originally and how old will their child be when the investment is worth about $100,000?
The investment is worth approximately 50% more after 25 years, and the investment is worth $100,000 when their child is about 31 years old.
The investment is worth approximately 50% more after 5 years, and the investment is worth $100,000 when their child is about 25 years old.
The investment is worth approximately 50% more after 14 years, and the investment is worth $100,000 when their child is about 31 years old.
The investment is worth approximately 50% more after 31 years, and the investment is worth $100,000 when their child is about 25 years old.
Exponential graph modeling the equation y equals seventy seven point nine times the log of the quantity x over forty thousand. Graph comes up from the left along the y axis and goes through the point forty thousand comma zero and continues to the right towards infinity.
After how many years will the investment be worth approximately 50% more than it was originally and how old will their child be when the investment is worth about $100,000?
The investment is worth approximately 50% more after 25 years, and the investment is worth $100,000 when their child is about 31 years old.
The investment is worth approximately 50% more after 5 years, and the investment is worth $100,000 when their child is about 25 years old.
The investment is worth approximately 50% more after 14 years, and the investment is worth $100,000 when their child is about 31 years old.
The investment is worth approximately 50% more after 31 years, and the investment is worth $100,000 when their child is about 25 years old.
1 answer:
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Given:
The two functions are:
To find:
The value of .
Solution:
We have,
We know that,
Putting , we get
Therefore, the value of is 2401.
Answer:
No, he is not correct because the constant in his answer should have been 21 not 7.
Step-by-step explanation:
Therefore, the correct answer is the fourth; he should have put 21.