Math 1090.003 Quiz 08
Spring 2016
Class ID
#:
501 wJiOS
ulD
#:
Instructions:
• Please clear your desks and remove headphones and hats during the quiz.
• Show all work, as partial credit will be given where appropriate. 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 amount, i.e. a fraction or symbolic
expression, except for dollar amounts which should be rounded to the nearest cent.
• Scientific calculators are allowed on this quiz.
• If your phone is out during the quiz it will be considered a cheating offense
put your phone away!
1
-
)
J\)
0
I
5
3
c
J
OLD
a
N
‘
a
‘I
0
x
(6
t
I
-4-
cj
ii
C)
—
-
Ii
0
0
N
II
0
(D
aq
-J
0
CID
0
-J
Math 1090.003
14 April 2016
2. Solve the following equation for x. Leave your answer as an exact expression. Do not use a
calculator to simplify.
5
2e
=
=j
cc
5
3
—
3
=
9.
5 f5
14 April 2016
Math 1090.003
Bonus Carbou-14 has a half-life of 5730 years. The amount y(t) of carbon-14 present after t years is
yo() °. where y is the initial amount present at t
18, 000 years. if the initial amount was 10 grams?
given
T
by y
=
0. How much is left after
4ptc
ftmd
/
2
Ii
-
7 jz
Jo
()
LA’
( Q0O
3c
lu
(o
I3)
4