Question

I answered 5 questions that are EASY AS FUDGE LOL and i just want someones feedback to see if it is right WILL GIVE BRAINLIEST HELPPPPPPPPPPPPP at least take a look at it!
1. The number of people that belong to a certain social website is 412 and growing at a rate of 5% every month.


How many members will there be in 9 months?


Enter your answer, rounded to the nearest whole number, in the box.


MY ANSWER IS: 639......RIGHT OR WRONG




2. The expression 15.85(1+x) gives the total cost of a toy, where x is the sales tax written in decimal form.


What does 1 + x represent in the expression?




percent of original price being paid in tax

cost of toy

percent of tax

amount of tax

3. A population of lizards decreases exponentially at a rate of 12.5% per year.


What is the equivalent monthly rate to the nearest hundredth of a percent?


0.20%

1.04%
1.11%

1.23%


4. Enrollment was increasing at a rate of 20% per year.


What was the monthly growth rate?




Enter your answer, rounded to the nearest tenth of a percent, in the box.


MY ANSWER IS: 1.7%



5. The value of a truck after t years is represented by the function f(t)=22,200(0.92)t .


What does the value 22,200 represent in this situation?




The value of the truck increases by $22,200 each year.

The initial value of the truck is $22,200.
The value of the truck decreases by $22,200 each year.

The value of the truck after t years is $22,200.

Answer 1

Answer:

1. The population increases exponentially, therefore the number of members in the team will increase by the equation modeled by :

$\text{Number of members = }a_0(1+\frac{Rate}{100})^{Time}\\\\\implies\text{Number of members = }412(1+\frac{5}{100})^9\\\\\implioes\text{Number of members after 9 months = }639$

2. Total cost of the toy is calculated by multiplying the initial cost and the amount of tax charged on the toy.

Here, 15.85 represents the initial cost of the toy

Hence, 1 + x represents the amount of tax charged on the toy.

3. Rate per year is given to be 12.5%

Now, to find monthly rate, divide the yearly rate by 12

$\text{Monthly Rate = }\frac{12.5}{12}=1.04\%$

4. Rate per year is given to be 20%

Now, to find monthly rate, divide the yearly rate by 12

$\text{Monthly Rate = }\frac{20}{12}\approx 1.7\%$

5. The value of a truck after t years is represented by the function f(t)=22,200(0.92)t .

Here, 2200 is the initial value of the truck.

Answer 2

Answer:

i got 185.4 so basically 184.

412 times 5% equals 20.6

times that by 9 for 9 months then that gives you the answer.