2.
Solveandwrite the solutionsetin intervalnotation: - 316- 2tl+ 1 > -5
3'
A bankloaaedout $ 12000,partof it at the rateof 8oloperyearandthe restat the rate
of l8% peryear.ifthe annual
interestreceivedtotaled$1000,how muchwasloanedat i%.1
=_l+
4. Solvebysubsritution
merhod:{+x-sl'
lr! = x- r
5. Solveandwritethesolutionsetin set_builder
n otatlon:7l2y+ lj _: > f S
6'
How manypoundsofcashewscost$9.00/lb.to mix with 60 poundsofalmondscost
$3.50/lbto makethe mixture
whichcost$7.50/lb?
l l
7.
14
Solve by elimination method: i
tl
t-
l r
l
4
)"
'7
')
2
3
d.
L e t / ( x ) =- x + - .
a.
nind /(-3).
)
v ----.l
4
b. Find f(a+2)
c.
Find thevalue(s)of:r suchthat /(x) = 1 .
d.
Findthezero(s)ofl
9'
A chemistwantsto make50,ml of a 6%oacidsolutionby mixinga 13%acid solution
andan 1g%acidsolution.
How manymilliliters of oachsolution shouldthe chemistuse?
10. Findthedomainofthe givenfunctions.
a. f(x)=Jy'za2
b. g(x) =
-L . r + J-
c.
?
o
n\x) = !---'
r+x-f,
I 1. Considerthe graphofl
12. The cost,C, ofrenting a 12-footmovingtruckfor a
day is $40plus $0.35permilesdriven.
9
-t
a.
Expressthe cost C asa function of driving the truck
x miles.
b.
Whatis the implieddomainof this linearfunction?
c.
What is the rental cost if the truck is driven 80
miles?
d.
How manymilescanyou drive ifyou canspendup
to $727.50?
\
X
7
a. Find,f(2).
b. Find /(s).
c.
Whatis thedomainof/?
d.
Whatis therangeoff 2
e.
What arethe intercepts?
r-intercept(s)
y-intercept(s)
f.
Forwhatnumber(s):r
is f(x)=-22
g.
What arethe zerosoff2
{y=2x+z+1
13. Solveby eliminationmethod:
-r=-zt,
l-2,+ 3 2- - 1 6 *+2,
3y
l5x