Ask question

Ask question

All categories

3 years ago

11

Ellie deposited $650 into her savings account. She then saved $150 per month. Which of the following equations shows a, the amou

nt in Ellie’s saving account after t months?

1 answer:

9966 [12]3 years ago

6 0

Answer:

650 + 150t = A

Step-by-step explanation:

You might be interested in

Let f(x)= x+2 and g(x)= x^2. Find (g•f)(-5)

STALIN [3.7K]

Answer:

-5x^3 -10x^2

Step-by-step explanation:

(x^2 *(x+2))(-5)

Apply the distributive property

(x^2 x + x^2*2)(-5)

Multiply x^2 by x by adding exponents

(x^3+x^2 *2)(-5)

Apply the distributive property

(x^3 + 2x^2)(-5)

-5x^3 -10x^2

7 0

4 years ago

solve the problem related to population growth.A city had a population of 23,900 in 2007 and a population of 25,100 in 2012.(a)

Finger [1]

Solution

a)

To find the exponential growth function, we apply the exponential growth formula which is

$N(t)=a(1+k)^t$

Where

$\begin{gathered} a\text{ is the }initial\text{ population} \\ k\text{ is the growth rate} \\ t\text{ is the number of time intervals} \end{gathered}$

Given that

$\begin{gathered} a=23,900 \\ N(5)=25,100 \\ t=2012-2007=5 \end{gathered}$

Substitute the variables into the exponential growth formula

$\begin{gathered} 25100=23900(1+k)^5 \\ \text{Divide both sides by 23,900} \\ \frac{25100}{23900}=\frac{23900(1+k)^5}{23900} \\ 1.05021=(1+k)^5^{} \\ \sqrt[5]{1.05021}=1+k \\ 1.00984=1+k \\ \text{Collect like terms} \\ k=1.00984-1 \\ k=0.00984 \end{gathered}$

Hence, the exponential growth function is

$\begin{gathered} N(t)=23900(1+0.00984)^t_{} \\ N(t)=23900(1.00984)^t \end{gathered}$

Hence, the exponential growth function is

$N(t)=23900(1.00984)^t$

b)

For the population of the city in 2022,

$\begin{gathered} t=2022-2007=15 \\ t=15 \end{gathered}$

Substitute for t into the exponential growth function

$\begin{gathered} N(t)=23900(1.00984)^t \\ N(15)=23900(1.00984)^{15} \\ N(15)=27700\text{ (nearest hundred)} \end{gathered}$

Hence, the population is 2022 is 27700 (nearest hundred)

8 0

1 year ago

In which story is the answer to the question 0?

ioda

Hi there!

Answer:

The temperature at lunchtime is 0 degrees Celsius.

Step-by-step explanation:

This is because we started at -2 and when we add 2 that brings us back at 0 (or neutral).

<u>Hope this helps and please mark brainliest. Have a great day!</u>

8 0

3 years ago

The mean number of touchdowns per football game is 3.7 with a population standard deviation of 0.9. A random sample of 31 footba

frez [133]

Answer:

Right Tail

P(x>3.9)= 0.108

Step-by-step explanation:

In excel, type =NORM.DIST(3.9, 3.7, 0.162, TRUE).

4 0

3 years ago

5+ k When K= 6 what should I do?

svet-max [94.6K]

Answer: 11

Step-by-step explanation:

5 + k If k is equal to 6 then input 6 in for k and solve.

5 + 6 = 11

6 0

3 years ago

Read 2 more answers