Ask
your own question, for FREE!

Mathematics

OpenStudy (anonymous):

Solve the problem. The formula A = P(1 + r)^2 is used to find the amount of money, A, in an account after P dollars have been invested in the account paying an annual interest rate, r, for 2 years. Find the interest rate r if $500 grows to $980 in 2 years. Seleccione una respuesta. a. 96% b. 4% c. 240% d. 40%

7 years ago
OpenStudy (anonymous):

980=500(1+r)^2 divide by 500 to get 1.96=(1+r)^2 take the square root of both sides to get 1.4=1+r. Subtract 1 to get r=.4 and that in percent is 40% so answer choice D is correct.

7 years ago
OpenStudy (anonymous):

are you sure?

7 years ago
OpenStudy (anonymous):

Yes, if you aren’t just plug it back in to the equation and see if I’m right.

7 years ago
OpenStudy (anonymous):

40 % is correct; i made a mistake earlier; my apologies

7 years ago
Can't find your answer?
Make a FREE account and ask your own question, OR you can help others and earn volunteer hours!

Latest Questions

eviant:
The longer leg of a 30u00b0-60u00b0-90u00b0 triangle is 16sqrt3. How long is the

20 minutes ago
8 Replies
1 Medal

nataliehayes:
Convert the following linear equation to standard form.

12 hours ago
0 Replies
0 Medals

nataliehayes:
Samson Trucking uses the following function to determine the salvage value, S(t), in dollars, of a truck t years after its purchase.

13 hours ago
0 Replies
0 Medals

CheetahGirls:
What is the shape of the cross-section formed when a plane containing line AC and line EH intersects this cube? What is the area of the cross-section? In tw

10 hours ago
5 Replies
0 Medals

MrMudd183:
In this excerpt from Phillip Freneau's poem u201cAmerican Liberty,u201d the speaker describes being u201cslaves and minions to a parliament.

15 hours ago
0 Replies
0 Medals

rainarapp19:
Image by Jane M. Sawyer Estimate the measure of the clockwise angle formed by the minute hand and the second hand, then classify the angle.

19 hours ago
1 Reply
0 Medals

Val050301:
Given the diagram above, the fact that LPOM is a rectangle, and the fact that LN=

19 hours ago
1 Reply
0 Medals

Val050301:
What theorem or postulate can be used to justify that HIG=FIE?

22 hours ago
2 Replies
1 Medal

MrMudd183:
You need to write a five-page essay on Leo Tolstoyu2019s novel The Death of Ivan Ilych.

22 hours ago
7 Replies
1 Medal

MrMudd183:
please help, it's graded Which two descriptions indicate that a book is a memoir? A.

22 hours ago
0 Replies
0 Medals

MrMudd183:
Maria is writing a persuasive essay for her English class. She asks Marshall if it is important to use rhetorical appeals in her essay.

23 hours ago
1 Reply
0 Medals

gviviana:
Jackie wants to take a trip around the world. She plans to deposit $150 at the beginning of each month into an investment with a 4.

19 hours ago
1 Reply
0 Medals

susu:
A plumber is fitting pipes for a remodeled kitchen sink. The sink requires 3 different sections of pipe; the first is 6sqrt(96) feet long, the second sectio

10 hours ago
2 Replies
0 Medals

Vocaloid:
having some trouble understanding how adding methanol increases the rate of hydrolysis on cellulose.

1 day ago
1 Reply
0 Medals