Math 1090.04 Quiz 13
Sprillg 2013
Name
SOLOhS
Student ID Number:
Instructions:
o
Please remove headphones and hats during the quiz
o
Show all work, as partial credit will be given where appropriate. Calcu
lator work should be your final step. If no work is shown, there may be
no credit given.
• All final answers should be written in the space provided on the quiz and
in simplified form. When needed give your answer as an exact amoullt,
i.e., a fraction or symbolic expression like e
, except for dollar amounts
2
which should be rounded to the nearest cent.
• Scientific Calculators are permitted on this exam. Graphing,
Programmable and Cell Phone Calculators are not allowed
• If your phone is out during the quiz it will be considered a
cheating offense put your phone away!
-
• When you have completed this quiz, place your homework on top of your
quiz and remain quietly at your desk. All homework and quizzes will be
collected together.
Quiz 13
MathlO9O.004
17 April 2013
Page 2 of 2
,
1. A population of 100 bacteria grows to 500 bacteria in 5 days.
(a) Assume exponential growth and
=
e
Giin. (D,8v)
(t,)
write
t
(ooo)
oo)
the population equation for this scenario.
/ ô e
-
5_C 0
,‘ooe
(6)
5e
—
-
-
-
:. oetJ/ooe3219t
(b) How long will it take to grow 950 bacteria? Round your answer to two decimal
places.
(
q5
.
=/ooe’
S
/
e
Jn()= .32fd7
)
f
(c) How many bacteria will be present after 46 days?
/OOe32/9)
2. Suppose you are going to save $25,000 for 3 years at an annual interest rates described
below. How much total interest would you have earned at the end of three years?
(a) 5 % Simple Interest
oo (I
)
.
0
.3)
Vo4—1’c-’-s
tLu1k/WL’)
)-.0
-
p
50oc
(b) 5 % Compounded Annually
/
cc!)
P(
5(35O0O(/
S=UflI({1t1U)fl
‘7=)
P=&s,Coo
7=3
Compounded Quarterly
(c) 5
-
+
P
.05)13
9
O
Oo
S(3)= (i+
&s, 000
O.
p
f)
-(
z
g(a—
01
S0oo
-2S° 0C
MathlO9O.004
Quiz 13
Page 3 of 2
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17 April 2013