Tutors Answer Your Questions about Functions (FREE)
Question 450449: Find the formula for the inverse
f(x)=x+5 f^-1=
I don't understand why the smaller a problem is, the more steps there are in solving it and the increase in frustration because I'm not able to solve it ;> Thanks.
Click here to see answer by lwsshak3(11628)  |
Question 445137: The question is: The amount of money A accrued at the end of t years when a certain amount, P, is invested at an annual rate r compounded n times per year is given by: A=P(1+r/n)^nt. How long will it take for $450 at 5% interest compounded monthly to reach $1000? (Write your answer to two decimal places.)
I've set the problem up like this:
1000=450(1+.05/12)^12(t)
1000=450(1+0.00417)^12(t)
1000=450(1.00417)^12(t)
1000=450(1.0512)^t
1000=473.04^t
And that's where I'm stuck. Assuming my math to that point is accurate (and if it's not, could you please help?), how do I go about the problem from this point? How do I get t to no longer be an exponent and move on to get the time?
Thank you!
Click here to see answer by lwsshak3(11628) |
Question 453323: Hi, I just started an Algebra class and I'm no sure how to solve this problem using Algebra. Any and all help is appreciate tremendously!!! Thank you Thank you!!
In 2005, the average commuting time to work in New York was 31.2 min. The average commuting time in North Dakota was 14.9 min shorter. How long was the average commute in North Dakota?
Click here to see answer by richard1234(7193)  |
Question 453319: Okay this is Very confusing to me since I just opened my Algebra book for my online class and this is the first question I see. If someone could maybe explain this to me or help me I would appreciate it so much. I am also looking for a tutor whom I will pay to help me a student with a learning disability in math, take this Algebra class and pass it! Any info. can be sent along with this prob.
Thank you so much for taking the time to help me!
Find the prime factorization of each number. If the number is prime, state this
79
Click here to see answer by richard1234(7193) |
Question 453334: Obviously I have no clue what I am doing because I think this problem looks pretty simple but if only I could figure it out.... If someone wouldn't mind helping me out I would greatly appreciate it. hanks you :)
Here it is: One third of the sum of two numbers
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 453337: Use the commutative and/or associative laws to show why the expression on the left is equivalent to the expression on the right. Write a series of steps with labels, as in 4 + (9 + x) is equivalent to x + 13
Thanks very much for helping me and explaining!
Click here to see answer by jim_thompson5910(35256) |
Question 453994: which are related functions
1-{(5,7),(-2,1),(5,0),(-3,6)}
2-{(-2,-1),(4,5),(4,-2),(3,4)}
3-{(0,4),(3,6),(-1,2),(4,0)}
Click here to see answer by Edwin McCravy(20056)  |
Question 454646: I need help with this problem:
Determine the parameter k so that the quadratic equation k x^2-16x+16=0 had exactly one real solution.
A world problem is related to this problem too: An object is tossed into the air with an upward velocity of 22 feet per second from the top of a 10-foot wall. Its flight is governed by h(t)=16t^2-22t-10=0. What is the time for the object to reach the highest point, and what is the altitude of this highest point?
Thank you very much.
Click here to see answer by htmentor(1343)  |
Question 454706: Tell whether the relationship is an inverse variation. Explain.
x y
2 409
3 240
4 194
A) The product xy is constant, so the relationship is not an inverse variation.
B) The product xy is not constant, so the relationship is an inverse variation.
C) The product xy is constant, so the relationship is an inverse variation.
D) The product xy is not constant, so the relationship is not an inverse variation.
Click here to see answer by richard1234(7193) |
Question 454758: Hello,
I need hep with the following problem:
Find the equation of the line that is perpendicular to y+3x=1, and has an x-intercept of 2. What is the distance between the point of intersection of the two lines and the origin?
Thank you.
Click here to see answer by richwmiller(17219)  |
Question 454847: Find the domain of the funtion.
p(x)=x^2-2x+6
What is the domain of p?
A. is a real # and x>o
B.is a real #
C. is a real # and equal sign with a line through it 0
D. is a real # and x equal sign with a line through it 6
Click here to see answer by stanbon(75887) |
Question 454920: I am having a problem trying to understand how to find zeros of a function if the problem does not show an equation.
What are the zeros of the following functions?
1st problem:
x=-2 y=14
x=-1 y=0
x=3 y=3
x=5 y=7
x=9 y=0
2nd problem:
x=1 y=10
x=2 y=20
x=3 y=5
x=4 y=0
x=5 y=15
Click here to see answer by Edwin McCravy(20056) |
Question 454896: Hello, I'm having trouble figuring out this question step by step and wanted to know if I could get some help with it.
Given the function t(x)= x^3 - 3x^2 + 2x - 3; find the following.
Please explain step by step, so that I may be able to solve other problems like this.
Thank you
Click here to see answer by Edwin McCravy(20056) |
Question 454981: I need help with this problem:
For P(x)=x^18+15^13+6^3-5x-1 with justification, list all possible rational zeros. For the same polynomial above, use Descarte´s Rule of Signs to determine how many positive real roots are possible.
Thank you very much.
Click here to see answer by stanbon(75887) |
Question 455055: Hi thank you for stopping by! If someone wouldn't mind helping me I would appreciate any and all help! I am looking for a math tutor will pay! I am a student with a Learning Disability!!!
Simplify:
2a+5a-(6a+8)
Thank you!!! :)
Click here to see answer by efitzpatrick11(1)  |
Question 455056: Hi thank you for stopping by! If someone wouldn't mind helping me I would appreciate any and all help! I am looking for a math tutor will pay! I am a student with a Learning Disability!!!
Simplify:
2a+5a-(6a+8)
Thank you!!! :)
I submited this just before but I forgot to put 6a I just put a. Sorry!!!
Click here to see answer by nerdybill(7384)  |
Question 455271: I need help with this problem:
Specify the range of f(x)=x -[x], where [x] is the greatest-interger function. Use the compound interest formula to prove the rule of 70: investment doubling time 70 where r is the nominal interest rate expressed as a percentage (number between zero and 100).
Thank you!
Click here to see answer by stanbon(75887) |
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