Hello, Dave!
Welcome aboard!
Here's the last one . . .
7. Express as the sum or difference of terms.
. .
We have: .
. . . . . .
Hello,
i am new to the forum; i am glad i found what i have been looking for.
I am just OK with maths; i have been struggling with these few pre-calculus question (some are logarithm); i have attached the questions.. I would really appreciate if anyone of you (maths expert/guru) can help me solve these.
Thanks a bunch!!
Please check the attached file.
What have you tried? Where are you stuck?
Please be complete, so we can "see" where you're having trouble.
Thank you!
Note to other viewers: The text of the exercises is as follows:
4) Assume the $3000 investment in problem (3) is placed in an account where interest is compounded continuously. Find the total amount of the investment after five years have passed (assuming no additional deposits or withdrawals) and find the amount of interest earned.
5) Find the time necessary for $500 to grow to $850 when placed in an account that earns 8% compounded semi-annually, assuming no additional deposits or withdrawals. You can certainly solve this graphically or, if you have worked some of the homework problems in section 5.4, you can use the 1-to-1 property of the exponential function and solve this problem algebraically.
6) Explain how the graph of G(X) = -2 * 3^(X + 1) + 1 can be obtained from F(X) = 3^(X) through a series of transformations.
7) Expand and simplify the following logarithmic expression using properties of logarithms, so that it becomes a sum or difference of terms.
. . . . .
What does question 3 say? I get the feeling you can't answer 4 without knowing 3.
The compound interest formula is where
= Amount at time t
= Amount at t=0
= interest rate (per unit of time)
= time.
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5) Use the above formula with
I get 6.89 six month periods = 3.45 years
Where are you stuck? You took the compound-interest formula, plugged "500" in for "P", "850" in for "A", "0.08" in for "r", and "2" in for "n", and then used whichever method you prefer for solving for the time "t".5) Find the time necessary for $500 to grow to $850 when placed in an account that earns 8% compounded semi-annually, assuming no additional deposits or withdrawals. You can certainly solve this graphically or, if you have worked some of the homework problems in section 5.4, you can use the 1-to-1 property of the exponential function and solve this problem algebraically.
Then what?
Please be complete, keeping in mind that we have no idea what was taught in "section 5.4" of whatever book you're using. Thank you!