For Exercises 61-70, use the model A = P e r t or A = P ( 1 + r n ) n t where A is the future value of P dollars invested at interest rate r compounded continuously or n times per year for t years. (See Example 11) 65. An $8000 investment grows to $9289.50 at 3% interest compounded quarterly. For how long was the money invested? Round to the nearest year.
For Exercises 61-70, use the model A = P e r t or A = P ( 1 + r n ) n t where A is the future value of P dollars invested at interest rate r compounded continuously or n times per year for t years. (See Example 11) 65. An $8000 investment grows to $9289.50 at 3% interest compounded quarterly. For how long was the money invested? Round to the nearest year.
For Exercises 61-70, use the model
A
=
P
e
r
t
or
A
=
P
(
1
+
r
n
)
n
t
where A is the future value of P dollars invested at interest rate r compounded continuously or n times per year for t years. (See Example 11)
65. An $8000 investment grows to $9289.50 at 3% interest compounded quarterly. For how long was the money invested? Round to the nearest year.
Solve the equation. Write the smaller
answer first.
2
(x-6)²
= 36
x =
Α
x =
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Write a quadratic equation in
factored form that has solutions of x
=
2 and x = = -3/5
○ a) (x-2)(5x + 3) = 0
○ b) (x + 2)(3x-5) = 0
O
c) (x + 2)(5x -3) = 0
○ d) (x-2)(3x + 5) = 0
Chapter 4 Solutions
College Algebra & Trigonometry Student Solutions Manual
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