Answer:
The correct choice is C
Step-by-step explanation:
The given curve is described by the parametric equations:


Let us eliminate the parameter by making t the subject in the first equation and substitute into the second equation;

We substitute this into the second equation to get:

This is the equation of a parabola whose vertex is at (4,-2)
The correct choice is C
Answer:
D
Step-by-step explanation:
4x2=8
5x2=10
6x2=12
This answer is the closest to 12 but it doesn't go over 12, so this is less than or equal to 12
The person would have to leave the money in the bank for 7.8 years for it to reach 13,500 dollars.
Step-by-step explanation:
Step 1; First we must calculate how much interest is generated for a single year. The annual interest rate is 4.5% i.e. 4.5% of 10,000 dollars which equals 0.045 × 10,000 = 450 dollars a year. As the years pass, more and more will be put into the account due to interest.
Step 2; For there to be 13,500 dollars in the bank account we need to calculate how much money is added due to interest.
The money needed to be added through interest = 13,500 - 10,000 = 3,500 dollars.
So we need to determine how long it will take for the bank to add 3,500 dollars by adding 450 dollars a year.
The number of years to reach 13,500 dollars =
= 7.777 years. By rounding this value to the nearest tenth, we get 7.8 years.
Answer:
74
Step-by-step explanation:
well, what is 9,744/2,280? take that and move the decimal point two places to the right to find the answer.