Welcome to the third College Algebra test! Your weapons of choice are a pen
this test, and your brains. You are not al lowed to use any books, notes (except
crib sheet), or calculators . Some general hints to help you maximize your
1. Show as much work as you can, since doing so gives me more opportunities
you with partial credit.
6. Consider the exponential function f(x) = 22-x+
(a) (4 points) Draw agraph of f (x) in the space provided.
(b) (6 points) What is the domain of f(x)?
(c) (6 points) What is the range of f(x)?
(d) (4 points) What is f(0)?
(e) (4 points) For what value(s) of x does f(x) = 2?
7. Consider the case of continuously compounding interest .
(a) (8 points) For fixed principle P, interest rate r, and compounding period n,
long will it take double your investment? (Hint: Your annuity is 2P in this
Solve for t.)
(b) (8 points) For fixed principle P, compounding period
n, and time t, what interest
rate is required to double your investment? (Hint: Your annuity is again 2P, but
this time you must solve for r.)
Start solving your Algebra Problems
in next 5 minutes!
Download (and optional CD)
Click to Buy Now:
2Checkout.com is an authorized reseller
of goods provided by Sofmath
Attention: We are
currently running a special promotional offer
for Algebra-Answer.com visitors -- if you order
Algebra Helper by midnight of
you will pay only $39.99
instead of our regular price of $74.99 -- this is $35 in
savings ! In order to take advantage of this
offer, you need to order by clicking on one of
the buttons on the left, not through our regular
If you order now you will also receive 30 minute live session from tutor.com for a 1$!
You Will Learn Algebra Better - Guaranteed!
Just take a look how incredibly simple Algebra Helper is:
: Enter your homework problem in an easy WYSIWYG (What you see is what you get) algebra editor:
Step 2 :
Let Algebra Helper solve it:
Step 3 : Ask for an explanation for the steps you don't understand:
Algebra Helper can solve problems in all the following areas:
simplification of algebraic expressions (operations
with polynomials (simplifying, degree, synthetic division...), exponential expressions, fractions and roots
(radicals), absolute values)